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Finding the Fourth Proportional to 518,314.59, 715,638.85 and 363,594.82

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Solution

The fourth proportional to 518,314.59, 715,638.85 and 363,594.82 is: 502,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,314.59 : 715,638.85 = 363,594.82 : x
  2. Step 2: Convert to fraction form
    518,314.59/715,638.85 = 363,594.82/x
  3. Step 3: Cross multiply
    518,314.59x = 715,638.85 × 363,594.82
  4. Step 4: Simplify right side
    518,314.59x = 260,202,577,032.78
  5. Step 5: Solve for x
    x = 260,202,577,032.78/518,314.59
  6. Step 6: Final answer
    x = 502,016.69

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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.