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Finding the Fourth Proportional to 125,876.60, 188,814.90 and 121,038.20

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Solution

The fourth proportional to 125,876.60, 188,814.90 and 121,038.20 is: 181,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,876.60 : 188,814.90 = 121,038.20 : x
  2. Step 2: Convert to fraction form
    125,876.60/188,814.90 = 121,038.20/x
  3. Step 3: Cross multiply
    125,876.60x = 188,814.90 × 121,038.20
  4. Step 4: Simplify right side
    125,876.60x = 22,853,815,629.18
  5. Step 5: Solve for x
    x = 22,853,815,629.18/125,876.60
  6. Step 6: Final answer
    x = 181,557.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.