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Finding the Fourth Proportional to 418,639.78, 577,705.45 and 237,363.96

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Solution

The fourth proportional to 418,639.78, 577,705.45 and 237,363.96 is: 327,552.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,639.78 : 577,705.45 = 237,363.96 : x
  2. Step 2: Convert to fraction form
    418,639.78/577,705.45 = 237,363.96/x
  3. Step 3: Cross multiply
    418,639.78x = 577,705.45 × 237,363.96
  4. Step 4: Simplify right side
    418,639.78x = 137,126,452,094.03
  5. Step 5: Solve for x
    x = 137,126,452,094.03/418,639.78
  6. Step 6: Final answer
    x = 327,552.37

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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.