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Finding the Fourth Proportional to 124,487.72, 171,792.25 and 70,772.75

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Solution

The fourth proportional to 124,487.72, 171,792.25 and 70,772.75 is: 97,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,487.72 : 171,792.25 = 70,772.75 : x
  2. Step 2: Convert to fraction form
    124,487.72/171,792.25 = 70,772.75/x
  3. Step 3: Cross multiply
    124,487.72x = 171,792.25 × 70,772.75
  4. Step 4: Simplify right side
    124,487.72x = 12,158,210,213.74
  5. Step 5: Solve for x
    x = 12,158,210,213.74/124,487.72
  6. Step 6: Final answer
    x = 97,665.94

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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.