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Finding the Fourth Proportional to 157,020.76, 216,639.75 and 89,032.40

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Solution

The fourth proportional to 157,020.76, 216,639.75 and 89,032.40 is: 122,836.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,020.76 : 216,639.75 = 89,032.40 : x
  2. Step 2: Convert to fraction form
    157,020.76/216,639.75 = 89,032.40/x
  3. Step 3: Cross multiply
    157,020.76x = 216,639.75 × 89,032.40
  4. Step 4: Simplify right side
    157,020.76x = 19,287,956,877.90
  5. Step 5: Solve for x
    x = 19,287,956,877.90/157,020.76
  6. Step 6: Final answer
    x = 122,836.99

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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.