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Finding the Fourth Proportional to 125,387.40, 188,081.10 and 46,493.40

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Solution

The fourth proportional to 125,387.40, 188,081.10 and 46,493.40 is: 69,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,387.40 : 188,081.10 = 46,493.40 : x
  2. Step 2: Convert to fraction form
    125,387.40/188,081.10 = 46,493.40/x
  3. Step 3: Cross multiply
    125,387.40x = 188,081.10 × 46,493.40
  4. Step 4: Simplify right side
    125,387.40x = 8,744,529,814.74
  5. Step 5: Solve for x
    x = 8,744,529,814.74/125,387.40
  6. Step 6: Final answer
    x = 69,740.10

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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.