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Finding the Fourth Proportional to 361,856.10, 499,349.58 and 218,591.16

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Solution

The fourth proportional to 361,856.10, 499,349.58 and 218,591.16 is: 301,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,856.10 : 499,349.58 = 218,591.16 : x
  2. Step 2: Convert to fraction form
    361,856.10/499,349.58 = 218,591.16/x
  3. Step 3: Cross multiply
    361,856.10x = 499,349.58 × 218,591.16
  4. Step 4: Simplify right side
    361,856.10x = 109,153,403,937.71
  5. Step 5: Solve for x
    x = 109,153,403,937.71/361,856.10
  6. Step 6: Final answer
    x = 301,648.65

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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.