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Finding the Fourth Proportional to 677,126.62, 934,501.56 and 386,781.57

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Solution

The fourth proportional to 677,126.62, 934,501.56 and 386,781.57 is: 533,796.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,126.62 : 934,501.56 = 386,781.57 : x
  2. Step 2: Convert to fraction form
    677,126.62/934,501.56 = 386,781.57/x
  3. Step 3: Cross multiply
    677,126.62x = 934,501.56 × 386,781.57
  4. Step 4: Simplify right side
    677,126.62x = 361,447,980,544.25
  5. Step 5: Solve for x
    x = 361,447,980,544.25/677,126.62
  6. Step 6: Final answer
    x = 533,796.74

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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.