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Finding the Fourth Proportional to 103,671.65, 143,071.48 and 58,352.56

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Solution

The fourth proportional to 103,671.65, 143,071.48 and 58,352.56 is: 80,529.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671.65 : 143,071.48 = 58,352.56 : x
  2. Step 2: Convert to fraction form
    103,671.65/143,071.48 = 58,352.56/x
  3. Step 3: Cross multiply
    103,671.65x = 143,071.48 × 58,352.56
  4. Step 4: Simplify right side
    103,671.65x = 8,348,587,120.99
  5. Step 5: Solve for x
    x = 8,348,587,120.99/103,671.65
  6. Step 6: Final answer
    x = 80,529.12

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1.5x scale

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.