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Finding the Fourth Proportional to 98,881.58, 148,374.67 and 53,935.40

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Solution

The fourth proportional to 98,881.58, 148,374.67 and 53,935.40 is: 80,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,881.58 : 148,374.67 = 53,935.40 : x
  2. Step 2: Convert to fraction form
    98,881.58/148,374.67 = 53,935.40/x
  3. Step 3: Cross multiply
    98,881.58x = 148,374.67 × 53,935.40
  4. Step 4: Simplify right side
    98,881.58x = 8,002,647,176.32
  5. Step 5: Solve for x
    x = 8,002,647,176.32/98,881.58
  6. Step 6: Final answer
    x = 80,931.63

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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.