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Finding the Fourth Proportional to 124,369.89, 171,631.04 and 70,657.86

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Solution

The fourth proportional to 124,369.89, 171,631.04 and 70,657.86 is: 97,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,369.89 : 171,631.04 = 70,657.86 : x
  2. Step 2: Convert to fraction form
    124,369.89/171,631.04 = 70,657.86/x
  3. Step 3: Cross multiply
    124,369.89x = 171,631.04 × 70,657.86
  4. Step 4: Simplify right side
    124,369.89x = 12,127,081,642.69
  5. Step 5: Solve for x
    x = 12,127,081,642.69/124,369.89
  6. Step 6: Final answer
    x = 97,508.18

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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.