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Finding the Fourth Proportional to 662,865.20, 994,297.80 and 611,543.60

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Solution

The fourth proportional to 662,865.20, 994,297.80 and 611,543.60 is: 917,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,865.20 : 994,297.80 = 611,543.60 : x
  2. Step 2: Convert to fraction form
    662,865.20/994,297.80 = 611,543.60/x
  3. Step 3: Cross multiply
    662,865.20x = 994,297.80 × 611,543.60
  4. Step 4: Simplify right side
    662,865.20x = 608,056,456,084.08
  5. Step 5: Solve for x
    x = 608,056,456,084.08/662,865.20
  6. Step 6: Final answer
    x = 917,315.40

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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.