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Finding the Fourth Proportional to 257,836.80, 386,852.40 and 124,834.80

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Solution

The fourth proportional to 257,836.80, 386,852.40 and 124,834.80 is: 187,299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,836.80 : 386,852.40 = 124,834.80 : x
  2. Step 2: Convert to fraction form
    257,836.80/386,852.40 = 124,834.80/x
  3. Step 3: Cross multiply
    257,836.80x = 386,852.40 × 124,834.80
  4. Step 4: Simplify right side
    257,836.80x = 48,292,641,983.52
  5. Step 5: Solve for x
    x = 48,292,641,983.52/257,836.80
  6. Step 6: Final answer
    x = 187,299.26

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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.