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Finding the Fourth Proportional to 424,465.64, 636,479.38 and 124,907.32

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Solution

The fourth proportional to 424,465.64, 636,479.38 and 124,907.32 is: 187,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,465.64 : 636,479.38 = 124,907.32 : x
  2. Step 2: Convert to fraction form
    424,465.64/636,479.38 = 124,907.32/x
  3. Step 3: Cross multiply
    424,465.64x = 636,479.38 × 124,907.32
  4. Step 4: Simplify right side
    424,465.64x = 79,500,933,591.06
  5. Step 5: Solve for x
    x = 79,500,933,591.06/424,465.64
  6. Step 6: Final answer
    x = 187,296.51

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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.