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Finding the Fourth Proportional to 935,784.12, 1,289,865.42 and 731,474.04

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Solution

The fourth proportional to 935,784.12, 1,289,865.42 and 731,474.04 is: 1,008,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,784.12 : 1,289,865.42 = 731,474.04 : x
  2. Step 2: Convert to fraction form
    935,784.12/1,289,865.42 = 731,474.04/x
  3. Step 3: Cross multiply
    935,784.12x = 1,289,865.42 × 731,474.04
  4. Step 4: Simplify right side
    935,784.12x = 943,503,069,823.70
  5. Step 5: Solve for x
    x = 943,503,069,823.70/935,784.12
  6. Step 6: Final answer
    x = 1,008,248.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.