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Finding the Fourth Proportional to 656,454.30, 982,713.15 and 390,077.70

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Solution

The fourth proportional to 656,454.30, 982,713.15 and 390,077.70 is: 583,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,454.30 : 982,713.15 = 390,077.70 : x
  2. Step 2: Convert to fraction form
    656,454.30/982,713.15 = 390,077.70/x
  3. Step 3: Cross multiply
    656,454.30x = 982,713.15 × 390,077.70
  4. Step 4: Simplify right side
    656,454.30x = 383,334,485,311.76
  5. Step 5: Solve for x
    x = 383,334,485,311.76/656,454.30
  6. Step 6: Final answer
    x = 583,946.95

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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.