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Finding the Fourth Proportional to 105,488.92, 158,291.88 and 43,203.16

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Solution

The fourth proportional to 105,488.92, 158,291.88 and 43,203.16 is: 64,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.92 : 158,291.88 = 43,203.16 : x
  2. Step 2: Convert to fraction form
    105,488.92/158,291.88 = 43,203.16/x
  3. Step 3: Cross multiply
    105,488.92x = 158,291.88 × 43,203.16
  4. Step 4: Simplify right side
    105,488.92x = 6,838,709,418.34
  5. Step 5: Solve for x
    x = 6,838,709,418.34/105,488.92
  6. Step 6: Final answer
    x = 64,828.70

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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.