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Finding the Fourth Proportional to 677,069.96, 934,385.18 and 386,729.28

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Solution

The fourth proportional to 677,069.96, 934,385.18 and 386,729.28 is: 533,702.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,069.96 : 934,385.18 = 386,729.28 : x
  2. Step 2: Convert to fraction form
    677,069.96/934,385.18 = 386,729.28/x
  3. Step 3: Cross multiply
    677,069.96x = 934,385.18 × 386,729.28
  4. Step 4: Simplify right side
    677,069.96x = 361,354,105,970.42
  5. Step 5: Solve for x
    x = 361,354,105,970.42/677,069.96
  6. Step 6: Final answer
    x = 533,702.76

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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.