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Finding the Fourth Proportional to 124,497.96, 171,807.24 and 70,781.64

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Solution

The fourth proportional to 124,497.96, 171,807.24 and 70,781.64 is: 97,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,497.96 : 171,807.24 = 70,781.64 : x
  2. Step 2: Convert to fraction form
    124,497.96/171,807.24 = 70,781.64/x
  3. Step 3: Cross multiply
    124,497.96x = 171,807.24 × 70,781.64
  4. Step 4: Simplify right side
    124,497.96x = 12,160,798,211.07
  5. Step 5: Solve for x
    x = 12,160,798,211.07/124,497.96
  6. Step 6: Final answer
    x = 97,678.69

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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.