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Finding the Fourth Proportional to 109,458.99, 151,053.18 and 61,712.01

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Solution

The fourth proportional to 109,458.99, 151,053.18 and 61,712.01 is: 85,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,458.99 : 151,053.18 = 61,712.01 : x
  2. Step 2: Convert to fraction form
    109,458.99/151,053.18 = 61,712.01/x
  3. Step 3: Cross multiply
    109,458.99x = 151,053.18 × 61,712.01
  4. Step 4: Simplify right side
    109,458.99x = 9,321,795,354.69
  5. Step 5: Solve for x
    x = 9,321,795,354.69/109,458.99
  6. Step 6: Final answer
    x = 85,162.45

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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.