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Finding the Fourth Proportional to 97,665.99, 147,231.01 and 91,155.97

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Solution

The fourth proportional to 97,665.99, 147,231.01 and 91,155.97 is: 137,417.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,665.99 : 147,231.01 = 91,155.97 : x
  2. Step 2: Convert to fraction form
    97,665.99/147,231.01 = 91,155.97/x
  3. Step 3: Cross multiply
    97,665.99x = 147,231.01 × 91,155.97
  4. Step 4: Simplify right side
    97,665.99x = 13,420,985,530.63
  5. Step 5: Solve for x
    x = 13,420,985,530.63/97,665.99
  6. Step 6: Final answer
    x = 137,417.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.