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Finding the Fourth Proportional to 98,860.55, 148,312.71 and 54,464.45

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Solution

The fourth proportional to 98,860.55, 148,312.71 and 54,464.45 is: 81,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,860.55 : 148,312.71 = 54,464.45 : x
  2. Step 2: Convert to fraction form
    98,860.55/148,312.71 = 54,464.45/x
  3. Step 3: Cross multiply
    98,860.55x = 148,312.71 × 54,464.45
  4. Step 4: Simplify right side
    98,860.55x = 8,077,769,436.60
  5. Step 5: Solve for x
    x = 8,077,769,436.60/98,860.55
  6. Step 6: Final answer
    x = 81,708.73

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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.