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Finding the Fourth Proportional to 7,661.36, 10,572.72 and 4,519.10

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Solution

The fourth proportional to 7,661.36, 10,572.72 and 4,519.10 is: 6,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.36 : 10,572.72 = 4,519.10 : x
  2. Step 2: Convert to fraction form
    7,661.36/10,572.72 = 4,519.10/x
  3. Step 3: Cross multiply
    7,661.36x = 10,572.72 × 4,519.10
  4. Step 4: Simplify right side
    7,661.36x = 47,779,178.95
  5. Step 5: Solve for x
    x = 47,779,178.95/7,661.36
  6. Step 6: Final answer
    x = 6,236.38

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Half scale
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Double scale
Find fourth proportional to 7,662.36, 10,574.10 and 4,520.10
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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.