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Finding the Fourth Proportional to 469,306.40, 647,655.57 and 265,387.83

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Solution

The fourth proportional to 469,306.40, 647,655.57 and 265,387.83 is: 366,242.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,306.40 : 647,655.57 = 265,387.83 : x
  2. Step 2: Convert to fraction form
    469,306.40/647,655.57 = 265,387.83/x
  3. Step 3: Cross multiply
    469,306.40x = 647,655.57 × 265,387.83
  4. Step 4: Simplify right side
    469,306.40x = 171,879,906,309.71
  5. Step 5: Solve for x
    x = 171,879,906,309.71/469,306.40
  6. Step 6: Final answer
    x = 366,242.41

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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.