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Finding the Fourth Proportional to 310,803.20, 466,149.12 and 83,102.72

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Solution

The fourth proportional to 310,803.20, 466,149.12 and 83,102.72 is: 124,639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,803.20 : 466,149.12 = 83,102.72 : x
  2. Step 2: Convert to fraction form
    310,803.20/466,149.12 = 83,102.72/x
  3. Step 3: Cross multiply
    310,803.20x = 466,149.12 × 83,102.72
  4. Step 4: Simplify right side
    310,803.20x = 38,738,259,797.61
  5. Step 5: Solve for x
    x = 38,738,259,797.61/310,803.20
  6. Step 6: Final answer
    x = 124,639.19

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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.