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Finding the Fourth Proportional to 54,565.61, 81,366.53 and 47,929.28

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Solution

The fourth proportional to 54,565.61, 81,366.53 and 47,929.28 is: 71,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,565.61 : 81,366.53 = 47,929.28 : x
  2. Step 2: Convert to fraction form
    54,565.61/81,366.53 = 47,929.28/x
  3. Step 3: Cross multiply
    54,565.61x = 81,366.53 × 47,929.28
  4. Step 4: Simplify right side
    54,565.61x = 3,899,839,199.00
  5. Step 5: Solve for x
    x = 3,899,839,199.00/54,565.61
  6. Step 6: Final answer
    x = 71,470.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.