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Finding the Fourth Proportional to 159,045.81, 219,483.68 and 91,063.83

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Solution

The fourth proportional to 159,045.81, 219,483.68 and 91,063.83 is: 125,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,045.81 : 219,483.68 = 91,063.83 : x
  2. Step 2: Convert to fraction form
    159,045.81/219,483.68 = 91,063.83/x
  3. Step 3: Cross multiply
    159,045.81x = 219,483.68 × 91,063.83
  4. Step 4: Simplify right side
    159,045.81x = 19,987,024,958.17
  5. Step 5: Solve for x
    x = 19,987,024,958.17/159,045.81
  6. Step 6: Final answer
    x = 125,668.35

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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.