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Finding the Fourth Proportional to 8,998.10, 12,417.39 and 5,019.11

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Solution

The fourth proportional to 8,998.10, 12,417.39 and 5,019.11 is: 6,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.10 : 12,417.39 = 5,019.11 : x
  2. Step 2: Convert to fraction form
    8,998.10/12,417.39 = 5,019.11/x
  3. Step 3: Cross multiply
    8,998.10x = 12,417.39 × 5,019.11
  4. Step 4: Simplify right side
    8,998.10x = 62,324,184.24
  5. Step 5: Solve for x
    x = 62,324,184.24/8,998.10
  6. Step 6: Final answer
    x = 6,926.38

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Find fourth proportional to 4,499.05, 6,208.70 and 2,509.55
Half scale
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Double scale
Find fourth proportional to 8,999.10, 12,418.77 and 5,020.11
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.