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Finding the Fourth Proportional to 124,531.70, 171,852.90 and 70,816.70

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Solution

The fourth proportional to 124,531.70, 171,852.90 and 70,816.70 is: 97,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,531.70 : 171,852.90 = 70,816.70 : x
  2. Step 2: Convert to fraction form
    124,531.70/171,852.90 = 70,816.70/x
  3. Step 3: Cross multiply
    124,531.70x = 171,852.90 × 70,816.70
  4. Step 4: Simplify right side
    124,531.70x = 12,170,055,263.43
  5. Step 5: Solve for x
    x = 12,170,055,263.43/124,531.70
  6. Step 6: Final answer
    x = 97,726.56

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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.