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Finding the Fourth Proportional to 141,886.84, 212,892.95 and 74,402.77

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Solution

The fourth proportional to 141,886.84, 212,892.95 and 74,402.77 is: 111,637.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,886.84 : 212,892.95 = 74,402.77 : x
  2. Step 2: Convert to fraction form
    141,886.84/212,892.95 = 74,402.77/x
  3. Step 3: Cross multiply
    141,886.84x = 212,892.95 × 74,402.77
  4. Step 4: Simplify right side
    141,886.84x = 15,839,825,193.47
  5. Step 5: Solve for x
    x = 15,839,825,193.47/141,886.84
  6. Step 6: Final answer
    x = 111,637.03

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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.