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Finding the Fourth Proportional to 83,611.40, 125,621.90 and 62,875.40

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Solution

The fourth proportional to 83,611.40, 125,621.90 and 62,875.40 is: 94,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,611.40 : 125,621.90 = 62,875.40 : x
  2. Step 2: Convert to fraction form
    83,611.40/125,621.90 = 62,875.40/x
  3. Step 3: Cross multiply
    83,611.40x = 125,621.90 × 62,875.40
  4. Step 4: Simplify right side
    83,611.40x = 7,898,527,211.26
  5. Step 5: Solve for x
    x = 7,898,527,211.26/83,611.40
  6. Step 6: Final answer
    x = 94,467.11

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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.