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Finding the Fourth Proportional to 316,363.68, 437,056.08 and 207,725.76

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Solution

The fourth proportional to 316,363.68, 437,056.08 and 207,725.76 is: 286,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,363.68 : 437,056.08 = 207,725.76 : x
  2. Step 2: Convert to fraction form
    316,363.68/437,056.08 = 207,725.76/x
  3. Step 3: Cross multiply
    316,363.68x = 437,056.08 × 207,725.76
  4. Step 4: Simplify right side
    316,363.68x = 90,787,806,380.62
  5. Step 5: Solve for x
    x = 90,787,806,380.62/316,363.68
  6. Step 6: Final answer
    x = 286,972.91

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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.