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Finding the Fourth Proportional to 669,843.64, 924,155.60 and 415,101.88

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Solution

The fourth proportional to 669,843.64, 924,155.60 and 415,101.88 is: 572,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,843.64 : 924,155.60 = 415,101.88 : x
  2. Step 2: Convert to fraction form
    669,843.64/924,155.60 = 415,101.88/x
  3. Step 3: Cross multiply
    669,843.64x = 924,155.60 × 415,101.88
  4. Step 4: Simplify right side
    669,843.64x = 383,618,726,972.53
  5. Step 5: Solve for x
    x = 383,618,726,972.53/669,843.64
  6. Step 6: Final answer
    x = 572,698.92

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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.