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Finding the Fourth Proportional to 70,805.10, 97,721.73 and 42,526.38

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Solution

The fourth proportional to 70,805.10, 97,721.73 and 42,526.38 is: 58,692.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,805.10 : 97,721.73 = 42,526.38 : x
  2. Step 2: Convert to fraction form
    70,805.10/97,721.73 = 42,526.38/x
  3. Step 3: Cross multiply
    70,805.10x = 97,721.73 × 42,526.38
  4. Step 4: Simplify right side
    70,805.10x = 4,155,751,424.24
  5. Step 5: Solve for x
    x = 4,155,751,424.24/70,805.10
  6. Step 6: Final answer
    x = 58,692.83

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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.