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Finding the Fourth Proportional to 868,536.60, 1,300,040.10 and 619,704.60

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Solution

The fourth proportional to 868,536.60, 1,300,040.10 and 619,704.60 is: 927,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,536.60 : 1,300,040.10 = 619,704.60 : x
  2. Step 2: Convert to fraction form
    868,536.60/1,300,040.10 = 619,704.60/x
  3. Step 3: Cross multiply
    868,536.60x = 1,300,040.10 × 619,704.60
  4. Step 4: Simplify right side
    868,536.60x = 805,640,830,154.46
  5. Step 5: Solve for x
    x = 805,640,830,154.46/868,536.60
  6. Step 6: Final answer
    x = 927,584.20

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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.