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Finding the Fourth Proportional to 61,489.19, 92,244.31 and 28,212.11

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Solution

The fourth proportional to 61,489.19, 92,244.31 and 28,212.11 is: 42,322.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,489.19 : 92,244.31 = 28,212.11 : x
  2. Step 2: Convert to fraction form
    61,489.19/92,244.31 = 28,212.11/x
  3. Step 3: Cross multiply
    61,489.19x = 92,244.31 × 28,212.11
  4. Step 4: Simplify right side
    61,489.19x = 2,602,406,434.76
  5. Step 5: Solve for x
    x = 2,602,406,434.76/61,489.19
  6. Step 6: Final answer
    x = 42,322.99

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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.