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Finding the Fourth Proportional to 906,686.60, 1,359,641.10 and 457,233.80

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Solution

The fourth proportional to 906,686.60, 1,359,641.10 and 457,233.80 is: 685,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,686.60 : 1,359,641.10 = 457,233.80 : x
  2. Step 2: Convert to fraction form
    906,686.60/1,359,641.10 = 457,233.80/x
  3. Step 3: Cross multiply
    906,686.60x = 1,359,641.10 × 457,233.80
  4. Step 4: Simplify right side
    906,686.60x = 621,673,866,789.18
  5. Step 5: Solve for x
    x = 621,673,866,789.18/906,686.60
  6. Step 6: Final answer
    x = 685,654.63

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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.