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Finding the Fourth Proportional to 124,389.60, 171,657.70 and 70,674.68

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Solution

The fourth proportional to 124,389.60, 171,657.70 and 70,674.68 is: 97,531.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,389.60 : 171,657.70 = 70,674.68 : x
  2. Step 2: Convert to fraction form
    124,389.60/171,657.70 = 70,674.68/x
  3. Step 3: Cross multiply
    124,389.60x = 171,657.70 × 70,674.68
  4. Step 4: Simplify right side
    124,389.60x = 12,131,853,591.35
  5. Step 5: Solve for x
    x = 12,131,853,591.35/124,389.60
  6. Step 6: Final answer
    x = 97,531.09

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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.