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Finding the Fourth Proportional to 404,643.90, 606,965.85 and 124,124.70

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Solution

The fourth proportional to 404,643.90, 606,965.85 and 124,124.70 is: 186,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.90 : 606,965.85 = 124,124.70 : x
  2. Step 2: Convert to fraction form
    404,643.90/606,965.85 = 124,124.70/x
  3. Step 3: Cross multiply
    404,643.90x = 606,965.85 × 124,124.70
  4. Step 4: Simplify right side
    404,643.90x = 75,339,454,041.50
  5. Step 5: Solve for x
    x = 75,339,454,041.50/404,643.90
  6. Step 6: Final answer
    x = 186,187.05

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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.