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Finding the Fourth Proportional to 112,758.30, 155,606.13 and 62,457.30

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Solution

The fourth proportional to 112,758.30, 155,606.13 and 62,457.30 is: 86,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,758.30 : 155,606.13 = 62,457.30 : x
  2. Step 2: Convert to fraction form
    112,758.30/155,606.13 = 62,457.30/x
  3. Step 3: Cross multiply
    112,758.30x = 155,606.13 × 62,457.30
  4. Step 4: Simplify right side
    112,758.30x = 9,718,738,743.25
  5. Step 5: Solve for x
    x = 9,718,738,743.25/112,758.30
  6. Step 6: Final answer
    x = 86,190.89

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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.