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Finding the Fourth Proportional to 295,272,439.80, 442,908,659.70 and 247,921,046.70

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Solution

The fourth proportional to 295,272,439.80, 442,908,659.70 and 247,921,046.70 is: 371,881,570.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,272,439.80 : 442,908,659.70 = 247,921,046.70 : x
  2. Step 2: Convert to fraction form
    295,272,439.80/442,908,659.70 = 247,921,046.70/x
  3. Step 3: Cross multiply
    295,272,439.80x = 442,908,659.70 × 247,921,046.70
  4. Step 4: Simplify right side
    295,272,439.80x = 109,806,378,505,318,096
  5. Step 5: Solve for x
    x = 109,806,378,505,318,096/295,272,439.80
  6. Step 6: Final answer
    x = 371,881,570.05

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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.