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Finding the Fourth Proportional to 98,662.91, 147,981.53 and 39,499.16

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Solution

The fourth proportional to 98,662.91, 147,981.53 and 39,499.16 is: 59,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,662.91 : 147,981.53 = 39,499.16 : x
  2. Step 2: Convert to fraction form
    98,662.91/147,981.53 = 39,499.16/x
  3. Step 3: Cross multiply
    98,662.91x = 147,981.53 × 39,499.16
  4. Step 4: Simplify right side
    98,662.91x = 5,845,145,489.36
  5. Step 5: Solve for x
    x = 5,845,145,489.36/98,662.91
  6. Step 6: Final answer
    x = 59,243.60

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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.