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Finding the Fourth Proportional to 125,398.98, 172,916.37 and 94,841.46

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Solution

The fourth proportional to 125,398.98, 172,916.37 and 94,841.46 is: 130,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,398.98 : 172,916.37 = 94,841.46 : x
  2. Step 2: Convert to fraction form
    125,398.98/172,916.37 = 94,841.46/x
  3. Step 3: Cross multiply
    125,398.98x = 172,916.37 × 94,841.46
  4. Step 4: Simplify right side
    125,398.98x = 16,399,640,988.70
  5. Step 5: Solve for x
    x = 16,399,640,988.70/125,398.98
  6. Step 6: Final answer
    x = 130,779.70

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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.