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Finding the Fourth Proportional to 191,808.90, 288,041.40 and 125,542.80

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Solution

The fourth proportional to 191,808.90, 288,041.40 and 125,542.80 is: 188,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,808.90 : 288,041.40 = 125,542.80 : x
  2. Step 2: Convert to fraction form
    191,808.90/288,041.40 = 125,542.80/x
  3. Step 3: Cross multiply
    191,808.90x = 288,041.40 × 125,542.80
  4. Step 4: Simplify right side
    191,808.90x = 36,161,523,871.92
  5. Step 5: Solve for x
    x = 36,161,523,871.92/191,808.90
  6. Step 6: Final answer
    x = 188,528.92

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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.