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Finding the Fourth Proportional to 442,155.70, 663,233.55 and 146,667.70

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Solution

The fourth proportional to 442,155.70, 663,233.55 and 146,667.70 is: 220,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,155.70 : 663,233.55 = 146,667.70 : x
  2. Step 2: Convert to fraction form
    442,155.70/663,233.55 = 146,667.70/x
  3. Step 3: Cross multiply
    442,155.70x = 663,233.55 × 146,667.70
  4. Step 4: Simplify right side
    442,155.70x = 97,274,939,341.34
  5. Step 5: Solve for x
    x = 97,274,939,341.34/442,155.70
  6. Step 6: Final answer
    x = 220,001.55

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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.