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Finding the Fourth Proportional to 650,187.60, 975,281.40 and 640,856.40

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Solution

The fourth proportional to 650,187.60, 975,281.40 and 640,856.40 is: 961,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,187.60 : 975,281.40 = 640,856.40 : x
  2. Step 2: Convert to fraction form
    650,187.60/975,281.40 = 640,856.40/x
  3. Step 3: Cross multiply
    650,187.60x = 975,281.40 × 640,856.40
  4. Step 4: Simplify right side
    650,187.60x = 625,015,326,990.96
  5. Step 5: Solve for x
    x = 625,015,326,990.96/650,187.60
  6. Step 6: Final answer
    x = 961,284.60

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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.