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Finding the Fourth Proportional to 650,830.40, 976,245.60 and 619,726.40

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Solution

The fourth proportional to 650,830.40, 976,245.60 and 619,726.40 is: 929,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,830.40 : 976,245.60 = 619,726.40 : x
  2. Step 2: Convert to fraction form
    650,830.40/976,245.60 = 619,726.40/x
  3. Step 3: Cross multiply
    650,830.40x = 976,245.60 × 619,726.40
  4. Step 4: Simplify right side
    650,830.40x = 605,005,171,203.84
  5. Step 5: Solve for x
    x = 605,005,171,203.84/650,830.40
  6. Step 6: Final answer
    x = 929,589.60

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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.