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Finding the Fourth Proportional to 641,688.30, 963,478.65 and 357,933.25

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Solution

The fourth proportional to 641,688.30, 963,478.65 and 357,933.25 is: 537,427.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,688.30 : 963,478.65 = 357,933.25 : x
  2. Step 2: Convert to fraction form
    641,688.30/963,478.65 = 357,933.25/x
  3. Step 3: Cross multiply
    641,688.30x = 963,478.65 × 357,933.25
  4. Step 4: Simplify right side
    641,688.30x = 344,861,044,500.11
  5. Step 5: Solve for x
    x = 344,861,044,500.11/641,688.30
  6. Step 6: Final answer
    x = 537,427.66

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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.