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Finding the Fourth Proportional to 807,686.80, 1,114,602.60 and 445,113.52

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Solution

The fourth proportional to 807,686.80, 1,114,602.60 and 445,113.52 is: 614,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,686.80 : 1,114,602.60 = 445,113.52 : x
  2. Step 2: Convert to fraction form
    807,686.80/1,114,602.60 = 445,113.52/x
  3. Step 3: Cross multiply
    807,686.80x = 1,114,602.60 × 445,113.52
  4. Step 4: Simplify right side
    807,686.80x = 496,124,686,687.15
  5. Step 5: Solve for x
    x = 496,124,686,687.15/807,686.80
  6. Step 6: Final answer
    x = 614,253.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.