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Finding the Fourth Proportional to 48,133.80, 72,123.90 and 40,300.20

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Solution

The fourth proportional to 48,133.80, 72,123.90 and 40,300.20 is: 60,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,133.80 : 72,123.90 = 40,300.20 : x
  2. Step 2: Convert to fraction form
    48,133.80/72,123.90 = 40,300.20/x
  3. Step 3: Cross multiply
    48,133.80x = 72,123.90 × 40,300.20
  4. Step 4: Simplify right side
    48,133.80x = 2,906,607,594.78
  5. Step 5: Solve for x
    x = 2,906,607,594.78/48,133.80
  6. Step 6: Final answer
    x = 60,386.00

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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.