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Finding the Fourth Proportional to 65,854.48, 98,792.16 and 28,425.28

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Solution

The fourth proportional to 65,854.48, 98,792.16 and 28,425.28 is: 42,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,854.48 : 98,792.16 = 28,425.28 : x
  2. Step 2: Convert to fraction form
    65,854.48/98,792.16 = 28,425.28/x
  3. Step 3: Cross multiply
    65,854.48x = 98,792.16 × 28,425.28
  4. Step 4: Simplify right side
    65,854.48x = 2,808,194,809.80
  5. Step 5: Solve for x
    x = 2,808,194,809.80/65,854.48
  6. Step 6: Final answer
    x = 42,642.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.