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Finding the Fourth Proportional to 423,656.68, 635,490.18 and 124,143.34

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Solution

The fourth proportional to 423,656.68, 635,490.18 and 124,143.34 is: 186,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,656.68 : 635,490.18 = 124,143.34 : x
  2. Step 2: Convert to fraction form
    423,656.68/635,490.18 = 124,143.34/x
  3. Step 3: Cross multiply
    423,656.68x = 635,490.18 × 124,143.34
  4. Step 4: Simplify right side
    423,656.68x = 78,891,873,482.40
  5. Step 5: Solve for x
    x = 78,891,873,482.40/423,656.68
  6. Step 6: Final answer
    x = 186,216.52

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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.