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Finding the Fourth Proportional to 83,713.20, 125,569.80 and 48,692.40

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Solution

The fourth proportional to 83,713.20, 125,569.80 and 48,692.40 is: 73,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,713.20 : 125,569.80 = 48,692.40 : x
  2. Step 2: Convert to fraction form
    83,713.20/125,569.80 = 48,692.40/x
  3. Step 3: Cross multiply
    83,713.20x = 125,569.80 × 48,692.40
  4. Step 4: Simplify right side
    83,713.20x = 6,114,294,929.52
  5. Step 5: Solve for x
    x = 6,114,294,929.52/83,713.20
  6. Step 6: Final answer
    x = 73,038.60

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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.