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Finding the Fourth Proportional to 664,587.60, 996,881.40 and 617,348.40

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Solution

The fourth proportional to 664,587.60, 996,881.40 and 617,348.40 is: 926,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,587.60 : 996,881.40 = 617,348.40 : x
  2. Step 2: Convert to fraction form
    664,587.60/996,881.40 = 617,348.40/x
  3. Step 3: Cross multiply
    664,587.60x = 996,881.40 × 617,348.40
  4. Step 4: Simplify right side
    664,587.60x = 615,423,137,279.76
  5. Step 5: Solve for x
    x = 615,423,137,279.76/664,587.60
  6. Step 6: Final answer
    x = 926,022.60

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Double scale
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Similar ratio
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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.