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Finding the Fourth Proportional to 791,793.60, 1,186,912.80 and 707,812.80

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Solution

The fourth proportional to 791,793.60, 1,186,912.80 and 707,812.80 is: 1,061,024.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,793.60 : 1,186,912.80 = 707,812.80 : x
  2. Step 2: Convert to fraction form
    791,793.60/1,186,912.80 = 707,812.80/x
  3. Step 3: Cross multiply
    791,793.60x = 1,186,912.80 × 707,812.80
  4. Step 4: Simplify right side
    791,793.60x = 840,112,072,323.84
  5. Step 5: Solve for x
    x = 840,112,072,323.84/791,793.60
  6. Step 6: Final answer
    x = 1,061,024.08

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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.