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Finding the Fourth Proportional to 103,346.16, 142,620.20 and 58,634.16

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Solution

The fourth proportional to 103,346.16, 142,620.20 and 58,634.16 is: 80,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,346.16 : 142,620.20 = 58,634.16 : x
  2. Step 2: Convert to fraction form
    103,346.16/142,620.20 = 58,634.16/x
  3. Step 3: Cross multiply
    103,346.16x = 142,620.20 × 58,634.16
  4. Step 4: Simplify right side
    103,346.16x = 8,362,415,626.03
  5. Step 5: Solve for x
    x = 8,362,415,626.03/103,346.16
  6. Step 6: Final answer
    x = 80,916.56

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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.