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Finding the Fourth Proportional to 157,767.90, 217,747.78 and 93,234.40

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Solution

The fourth proportional to 157,767.90, 217,747.78 and 93,234.40 is: 128,680.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,767.90 : 217,747.78 = 93,234.40 : x
  2. Step 2: Convert to fraction form
    157,767.90/217,747.78 = 93,234.40/x
  3. Step 3: Cross multiply
    157,767.90x = 217,747.78 × 93,234.40
  4. Step 4: Simplify right side
    157,767.90x = 20,301,583,619.63
  5. Step 5: Solve for x
    x = 20,301,583,619.63/157,767.90
  6. Step 6: Final answer
    x = 128,680.06

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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.