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Finding the Fourth Proportional to 605,538.40, 908,307.60 and 392,648.80

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Solution

The fourth proportional to 605,538.40, 908,307.60 and 392,648.80 is: 588,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,538.40 : 908,307.60 = 392,648.80 : x
  2. Step 2: Convert to fraction form
    605,538.40/908,307.60 = 392,648.80/x
  3. Step 3: Cross multiply
    605,538.40x = 908,307.60 × 392,648.80
  4. Step 4: Simplify right side
    605,538.40x = 356,645,889,170.88
  5. Step 5: Solve for x
    x = 356,645,889,170.88/605,538.40
  6. Step 6: Final answer
    x = 588,973.20

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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.