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Finding the Fourth Proportional to 410,129.20, 615,193.80 and 383,690.80

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Solution

The fourth proportional to 410,129.20, 615,193.80 and 383,690.80 is: 575,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,129.20 : 615,193.80 = 383,690.80 : x
  2. Step 2: Convert to fraction form
    410,129.20/615,193.80 = 383,690.80/x
  3. Step 3: Cross multiply
    410,129.20x = 615,193.80 × 383,690.80
  4. Step 4: Simplify right side
    410,129.20x = 236,044,201,277.04
  5. Step 5: Solve for x
    x = 236,044,201,277.04/410,129.20
  6. Step 6: Final answer
    x = 575,536.20

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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.