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Finding the Fourth Proportional to 455,062.29, 627,985.49 and 251,113.16

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Solution

The fourth proportional to 455,062.29, 627,985.49 and 251,113.16 is: 346,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,062.29 : 627,985.49 = 251,113.16 : x
  2. Step 2: Convert to fraction form
    455,062.29/627,985.49 = 251,113.16/x
  3. Step 3: Cross multiply
    455,062.29x = 627,985.49 × 251,113.16
  4. Step 4: Simplify right side
    455,062.29x = 157,695,416,432.56
  5. Step 5: Solve for x
    x = 157,695,416,432.56/455,062.29
  6. Step 6: Final answer
    x = 346,535.89

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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.