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Finding the Fourth Proportional to 624,840.87, 862,280.19 and 338,360.88

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Solution

The fourth proportional to 624,840.87, 862,280.19 and 338,360.88 is: 466,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,840.87 : 862,280.19 = 338,360.88 : x
  2. Step 2: Convert to fraction form
    624,840.87/862,280.19 = 338,360.88/x
  3. Step 3: Cross multiply
    624,840.87x = 862,280.19 × 338,360.88
  4. Step 4: Simplify right side
    624,840.87x = 291,761,883,894.97
  5. Step 5: Solve for x
    x = 291,761,883,894.97/624,840.87
  6. Step 6: Final answer
    x = 466,937.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.