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Finding the Fourth Proportional to 868,643.60, 1,300,200.60 and 619,811.60

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Solution

The fourth proportional to 868,643.60, 1,300,200.60 and 619,811.60 is: 927,744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,643.60 : 1,300,200.60 = 619,811.60 : x
  2. Step 2: Convert to fraction form
    868,643.60/1,300,200.60 = 619,811.60/x
  3. Step 3: Cross multiply
    868,643.60x = 1,300,200.60 × 619,811.60
  4. Step 4: Simplify right side
    868,643.60x = 805,879,414,206.96
  5. Step 5: Solve for x
    x = 805,879,414,206.96/868,643.60
  6. Step 6: Final answer
    x = 927,744.61

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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.