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Finding the Fourth Proportional to 866,487.20, 1,299,730.80 and 614,544.80

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Solution

The fourth proportional to 866,487.20, 1,299,730.80 and 614,544.80 is: 921,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,487.20 : 1,299,730.80 = 614,544.80 : x
  2. Step 2: Convert to fraction form
    866,487.20/1,299,730.80 = 614,544.80/x
  3. Step 3: Cross multiply
    866,487.20x = 1,299,730.80 × 614,544.80
  4. Step 4: Simplify right side
    866,487.20x = 798,742,804,539.84
  5. Step 5: Solve for x
    x = 798,742,804,539.84/866,487.20
  6. Step 6: Final answer
    x = 921,817.20

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1.5x scale

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.