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Finding the Fourth Proportional to 124,389.79, 171,657.96 and 70,674.87

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Solution

The fourth proportional to 124,389.79, 171,657.96 and 70,674.87 is: 97,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,389.79 : 171,657.96 = 70,674.87 : x
  2. Step 2: Convert to fraction form
    124,389.79/171,657.96 = 70,674.87/x
  3. Step 3: Cross multiply
    124,389.79x = 171,657.96 × 70,674.87
  4. Step 4: Simplify right side
    124,389.79x = 12,131,904,386.15
  5. Step 5: Solve for x
    x = 12,131,904,386.15/124,389.79
  6. Step 6: Final answer
    x = 97,531.35

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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.