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Finding the Fourth Proportional to 152,471.59, 210,407.65 and 84,487.97

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Solution

The fourth proportional to 152,471.59, 210,407.65 and 84,487.97 is: 116,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,471.59 : 210,407.65 = 84,487.97 : x
  2. Step 2: Convert to fraction form
    152,471.59/210,407.65 = 84,487.97/x
  3. Step 3: Cross multiply
    152,471.59x = 210,407.65 × 84,487.97
  4. Step 4: Simplify right side
    152,471.59x = 17,776,913,957.71
  5. Step 5: Solve for x
    x = 17,776,913,957.71/152,471.59
  6. Step 6: Final answer
    x = 116,591.65

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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.