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Finding the Fourth Proportional to 60,091.83, 90,142.86 and 15,718.51

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Solution

The fourth proportional to 60,091.83, 90,142.86 and 15,718.51 is: 23,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,091.83 : 90,142.86 = 15,718.51 : x
  2. Step 2: Convert to fraction form
    60,091.83/90,142.86 = 15,718.51/x
  3. Step 3: Cross multiply
    60,091.83x = 90,142.86 × 15,718.51
  4. Step 4: Simplify right side
    60,091.83x = 1,416,911,529.54
  5. Step 5: Solve for x
    x = 1,416,911,529.54/60,091.83
  6. Step 6: Final answer
    x = 23,579.10

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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.