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Finding the Fourth Proportional to 605,206.80, 907,810.20 and 392,630.40

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Solution

The fourth proportional to 605,206.80, 907,810.20 and 392,630.40 is: 588,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,206.80 : 907,810.20 = 392,630.40 : x
  2. Step 2: Convert to fraction form
    605,206.80/907,810.20 = 392,630.40/x
  3. Step 3: Cross multiply
    605,206.80x = 907,810.20 × 392,630.40
  4. Step 4: Simplify right side
    605,206.80x = 356,433,881,950.08
  5. Step 5: Solve for x
    x = 356,433,881,950.08/605,206.80
  6. Step 6: Final answer
    x = 588,945.60

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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.