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Finding the Fourth Proportional to 97,189.91, 145,252.36 and 70,949.91

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Solution

The fourth proportional to 97,189.91, 145,252.36 and 70,949.91 is: 106,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,189.91 : 145,252.36 = 70,949.91 : x
  2. Step 2: Convert to fraction form
    97,189.91/145,252.36 = 70,949.91/x
  3. Step 3: Cross multiply
    97,189.91x = 145,252.36 × 70,949.91
  4. Step 4: Simplify right side
    97,189.91x = 10,305,641,869.29
  5. Step 5: Solve for x
    x = 10,305,641,869.29/97,189.91
  6. Step 6: Final answer
    x = 106,036.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.