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Finding the Fourth Proportional to 917,150.60, 1,375,725.90 and 693,201.80

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Solution

The fourth proportional to 917,150.60, 1,375,725.90 and 693,201.80 is: 1,039,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,150.60 : 1,375,725.90 = 693,201.80 : x
  2. Step 2: Convert to fraction form
    917,150.60/1,375,725.90 = 693,201.80/x
  3. Step 3: Cross multiply
    917,150.60x = 1,375,725.90 × 693,201.80
  4. Step 4: Simplify right side
    917,150.60x = 953,655,670,186.62
  5. Step 5: Solve for x
    x = 953,655,670,186.62/917,150.60
  6. Step 6: Final answer
    x = 1,039,802.70

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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.