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Finding the Fourth Proportional to 125,887.80, 173,685.96 and 71,430.96

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Solution

The fourth proportional to 125,887.80, 173,685.96 and 71,430.96 is: 98,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,887.80 : 173,685.96 = 71,430.96 : x
  2. Step 2: Convert to fraction form
    125,887.80/173,685.96 = 71,430.96/x
  3. Step 3: Cross multiply
    125,887.80x = 173,685.96 × 71,430.96
  4. Step 4: Simplify right side
    125,887.80x = 12,406,554,861.32
  5. Step 5: Solve for x
    x = 12,406,554,861.32/125,887.80
  6. Step 6: Final answer
    x = 98,552.48

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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.