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Finding the Fourth Proportional to 125,220.79, 187,872.70 and 83,266.01

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Solution

The fourth proportional to 125,220.79, 187,872.70 and 83,266.01 is: 124,926.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,220.79 : 187,872.70 = 83,266.01 : x
  2. Step 2: Convert to fraction form
    125,220.79/187,872.70 = 83,266.01/x
  3. Step 3: Cross multiply
    125,220.79x = 187,872.70 × 83,266.01
  4. Step 4: Simplify right side
    125,220.79x = 15,643,409,852.55
  5. Step 5: Solve for x
    x = 15,643,409,852.55/125,220.79
  6. Step 6: Final answer
    x = 124,926.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.