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Finding the Fourth Proportional to 372,886.60, 558,017.70 and 260,037.40

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Solution

The fourth proportional to 372,886.60, 558,017.70 and 260,037.40 is: 389,141.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,886.60 : 558,017.70 = 260,037.40 : x
  2. Step 2: Convert to fraction form
    372,886.60/558,017.70 = 260,037.40/x
  3. Step 3: Cross multiply
    372,886.60x = 558,017.70 × 260,037.40
  4. Step 4: Simplify right side
    372,886.60x = 145,105,471,861.98
  5. Step 5: Solve for x
    x = 145,105,471,861.98/372,886.60
  6. Step 6: Final answer
    x = 389,141.02

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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.