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Finding the Fourth Proportional to 440,987.58, 661,445.46 and 141,387.48

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Solution

The fourth proportional to 440,987.58, 661,445.46 and 141,387.48 is: 212,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,987.58 : 661,445.46 = 141,387.48 : x
  2. Step 2: Convert to fraction form
    440,987.58/661,445.46 = 141,387.48/x
  3. Step 3: Cross multiply
    440,987.58x = 661,445.46 × 141,387.48
  4. Step 4: Simplify right side
    440,987.58x = 93,520,106,746.84
  5. Step 5: Solve for x
    x = 93,520,106,746.84/440,987.58
  6. Step 6: Final answer
    x = 212,069.71

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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.