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Finding the Fourth Proportional to 677,470.08, 934,841.34 and 391,082.40

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Solution

The fourth proportional to 677,470.08, 934,841.34 and 391,082.40 is: 539,654.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,470.08 : 934,841.34 = 391,082.40 : x
  2. Step 2: Convert to fraction form
    677,470.08/934,841.34 = 391,082.40/x
  3. Step 3: Cross multiply
    677,470.08x = 934,841.34 × 391,082.40
  4. Step 4: Simplify right side
    677,470.08x = 365,599,994,866.42
  5. Step 5: Solve for x
    x = 365,599,994,866.42/677,470.08
  6. Step 6: Final answer
    x = 539,654.82

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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.