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Finding the Fourth Proportional to 610,476.12, 842,543.10 and 338,604.48

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Solution

The fourth proportional to 610,476.12, 842,543.10 and 338,604.48 is: 467,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,476.12 : 842,543.10 = 338,604.48 : x
  2. Step 2: Convert to fraction form
    610,476.12/842,543.10 = 338,604.48/x
  3. Step 3: Cross multiply
    610,476.12x = 842,543.10 × 338,604.48
  4. Step 4: Simplify right side
    610,476.12x = 285,288,868,253.09
  5. Step 5: Solve for x
    x = 285,288,868,253.09/610,476.12
  6. Step 6: Final answer
    x = 467,321.91

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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.