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Finding the Fourth Proportional to 125,455.52, 173,117.12 and 74,459.48

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Solution

The fourth proportional to 125,455.52, 173,117.12 and 74,459.48 is: 102,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.52 : 173,117.12 = 74,459.48 : x
  2. Step 2: Convert to fraction form
    125,455.52/173,117.12 = 74,459.48/x
  3. Step 3: Cross multiply
    125,455.52x = 173,117.12 × 74,459.48
  4. Step 4: Simplify right side
    125,455.52x = 12,890,209,496.41
  5. Step 5: Solve for x
    x = 12,890,209,496.41/125,455.52
  6. Step 6: Final answer
    x = 102,747.25

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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.