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Finding the Fourth Proportional to 698,273.72, 963,699.90 and 392,350.76

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Solution

The fourth proportional to 698,273.72, 963,699.90 and 392,350.76 is: 541,490.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,273.72 : 963,699.90 = 392,350.76 : x
  2. Step 2: Convert to fraction form
    698,273.72/963,699.90 = 392,350.76/x
  3. Step 3: Cross multiply
    698,273.72x = 963,699.90 × 392,350.76
  4. Step 4: Simplify right side
    698,273.72x = 378,108,388,176.92
  5. Step 5: Solve for x
    x = 378,108,388,176.92/698,273.72
  6. Step 6: Final answer
    x = 541,490.22

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Double scale
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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.