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Finding the Fourth Proportional to 57,618.81, 86,312.93 and 45,792.54

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Solution

The fourth proportional to 57,618.81, 86,312.93 and 45,792.54 is: 68,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,618.81 : 86,312.93 = 45,792.54 : x
  2. Step 2: Convert to fraction form
    57,618.81/86,312.93 = 45,792.54/x
  3. Step 3: Cross multiply
    57,618.81x = 86,312.93 × 45,792.54
  4. Step 4: Simplify right side
    57,618.81x = 3,952,488,070.58
  5. Step 5: Solve for x
    x = 3,952,488,070.58/57,618.81
  6. Step 6: Final answer
    x = 68,597.18

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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.