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Finding the Fourth Proportional to 172,981.12, 238,713.84 and 93,493.12

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Solution

The fourth proportional to 172,981.12, 238,713.84 and 93,493.12 is: 129,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,981.12 : 238,713.84 = 93,493.12 : x
  2. Step 2: Convert to fraction form
    172,981.12/238,713.84 = 93,493.12/x
  3. Step 3: Cross multiply
    172,981.12x = 238,713.84 × 93,493.12
  4. Step 4: Simplify right side
    172,981.12x = 22,318,101,688.78
  5. Step 5: Solve for x
    x = 22,318,101,688.78/172,981.12
  6. Step 6: Final answer
    x = 129,020.45

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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.