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Finding the Fourth Proportional to 323,545.94, 485,320.14 and 98,905.52

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Solution

The fourth proportional to 323,545.94, 485,320.14 and 98,905.52 is: 148,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,545.94 : 485,320.14 = 98,905.52 : x
  2. Step 2: Convert to fraction form
    323,545.94/485,320.14 = 98,905.52/x
  3. Step 3: Cross multiply
    323,545.94x = 485,320.14 × 98,905.52
  4. Step 4: Simplify right side
    323,545.94x = 48,000,840,813.17
  5. Step 5: Solve for x
    x = 48,000,840,813.17/323,545.94
  6. Step 6: Final answer
    x = 148,358.66

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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.