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Finding the Fourth Proportional to 907,687.20, 1,361,530.80 and 410,023.20

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Solution

The fourth proportional to 907,687.20, 1,361,530.80 and 410,023.20 is: 615,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,687.20 : 1,361,530.80 = 410,023.20 : x
  2. Step 2: Convert to fraction form
    907,687.20/1,361,530.80 = 410,023.20/x
  3. Step 3: Cross multiply
    907,687.20x = 1,361,530.80 × 410,023.20
  4. Step 4: Simplify right side
    907,687.20x = 558,259,215,514.56
  5. Step 5: Solve for x
    x = 558,259,215,514.56/907,687.20
  6. Step 6: Final answer
    x = 615,034.80

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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.