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Finding the Fourth Proportional to 9,176.82, 12,663.84 and 4,985.10

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Solution

The fourth proportional to 9,176.82, 12,663.84 and 4,985.10 is: 6,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,176.82 : 12,663.84 = 4,985.10 : x
  2. Step 2: Convert to fraction form
    9,176.82/12,663.84 = 4,985.10/x
  3. Step 3: Cross multiply
    9,176.82x = 12,663.84 × 4,985.10
  4. Step 4: Simplify right side
    9,176.82x = 63,130,508.78
  5. Step 5: Solve for x
    x = 63,130,508.78/9,176.82
  6. Step 6: Final answer
    x = 6,879.34

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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.