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Finding the Fourth Proportional to 71,535.24, 98,724.84 and 39,710.28

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Solution

The fourth proportional to 71,535.24, 98,724.84 and 39,710.28 is: 54,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,535.24 : 98,724.84 = 39,710.28 : x
  2. Step 2: Convert to fraction form
    71,535.24/98,724.84 = 39,710.28/x
  3. Step 3: Cross multiply
    71,535.24x = 98,724.84 × 39,710.28
  4. Step 4: Simplify right side
    71,535.24x = 3,920,391,039.36
  5. Step 5: Solve for x
    x = 3,920,391,039.36/71,535.24
  6. Step 6: Final answer
    x = 54,803.63

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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.