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Finding the Fourth Proportional to 125,045.70, 172,535.48 and 74,033.10

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Solution

The fourth proportional to 125,045.70, 172,535.48 and 74,033.10 is: 102,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,045.70 : 172,535.48 = 74,033.10 : x
  2. Step 2: Convert to fraction form
    125,045.70/172,535.48 = 74,033.10/x
  3. Step 3: Cross multiply
    125,045.70x = 172,535.48 × 74,033.10
  4. Step 4: Simplify right side
    125,045.70x = 12,773,336,444.39
  5. Step 5: Solve for x
    x = 12,773,336,444.39/125,045.70
  6. Step 6: Final answer
    x = 102,149.35

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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.