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Finding the Fourth Proportional to 815,607.20, 1,125,499.84 and 453,054.40

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Solution

The fourth proportional to 815,607.20, 1,125,499.84 and 453,054.40 is: 625,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,607.20 : 1,125,499.84 = 453,054.40 : x
  2. Step 2: Convert to fraction form
    815,607.20/1,125,499.84 = 453,054.40/x
  3. Step 3: Cross multiply
    815,607.20x = 1,125,499.84 × 453,054.40
  4. Step 4: Simplify right side
    815,607.20x = 509,912,654,711.30
  5. Step 5: Solve for x
    x = 509,912,654,711.30/815,607.20
  6. Step 6: Final answer
    x = 625,193.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.