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Finding the Fourth Proportional to 103,675.76, 143,072.76 and 58,963.76

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Solution

The fourth proportional to 103,675.76, 143,072.76 and 58,963.76 is: 81,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,675.76 : 143,072.76 = 58,963.76 : x
  2. Step 2: Convert to fraction form
    103,675.76/143,072.76 = 58,963.76/x
  3. Step 3: Cross multiply
    103,675.76x = 143,072.76 × 58,963.76
  4. Step 4: Simplify right side
    103,675.76x = 8,436,107,883.18
  5. Step 5: Solve for x
    x = 8,436,107,883.18/103,675.76
  6. Step 6: Final answer
    x = 81,370.11

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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.