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Finding the Fourth Proportional to 73,886.88, 101,938.60 and 42,047.80

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Solution

The fourth proportional to 73,886.88, 101,938.60 and 42,047.80 is: 58,011.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,886.88 : 101,938.60 = 42,047.80 : x
  2. Step 2: Convert to fraction form
    73,886.88/101,938.60 = 42,047.80/x
  3. Step 3: Cross multiply
    73,886.88x = 101,938.60 × 42,047.80
  4. Step 4: Simplify right side
    73,886.88x = 4,286,293,865.08
  5. Step 5: Solve for x
    x = 4,286,293,865.08/73,886.88
  6. Step 6: Final answer
    x = 58,011.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.