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Finding the Fourth Proportional to 141,298.74, 211,699.04 and 74,591.91

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Solution

The fourth proportional to 141,298.74, 211,699.04 and 74,591.91 is: 111,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,298.74 : 211,699.04 = 74,591.91 : x
  2. Step 2: Convert to fraction form
    141,298.74/211,699.04 = 74,591.91/x
  3. Step 3: Cross multiply
    141,298.74x = 211,699.04 × 74,591.91
  4. Step 4: Simplify right side
    141,298.74x = 15,791,035,365.81
  5. Step 5: Solve for x
    x = 15,791,035,365.81/141,298.74
  6. Step 6: Final answer
    x = 111,756.38

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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.