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Finding the Fourth Proportional to 55,856.65, 83,758.65 and 20,292.89

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Solution

The fourth proportional to 55,856.65, 83,758.65 and 20,292.89 is: 30,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,856.65 : 83,758.65 = 20,292.89 : x
  2. Step 2: Convert to fraction form
    55,856.65/83,758.65 = 20,292.89/x
  3. Step 3: Cross multiply
    55,856.65x = 83,758.65 × 20,292.89
  4. Step 4: Simplify right side
    55,856.65x = 1,699,705,071.00
  5. Step 5: Solve for x
    x = 1,699,705,071.00/55,856.65
  6. Step 6: Final answer
    x = 30,429.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.