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Finding the Fourth Proportional to 124,369.12, 171,629.97 and 70,657.08

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Solution

The fourth proportional to 124,369.12, 171,629.97 and 70,657.08 is: 97,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,369.12 : 171,629.97 = 70,657.08 : x
  2. Step 2: Convert to fraction form
    124,369.12/171,629.97 = 70,657.08/x
  3. Step 3: Cross multiply
    124,369.12x = 171,629.97 × 70,657.08
  4. Step 4: Simplify right side
    124,369.12x = 12,126,872,520.69
  5. Step 5: Solve for x
    x = 12,126,872,520.69/124,369.12
  6. Step 6: Final answer
    x = 97,507.11

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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.