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Finding the Fourth Proportional to 98,127.71, 147,191.72 and 28,007.02

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Solution

The fourth proportional to 98,127.71, 147,191.72 and 28,007.02 is: 42,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127.71 : 147,191.72 = 28,007.02 : x
  2. Step 2: Convert to fraction form
    98,127.71/147,191.72 = 28,007.02/x
  3. Step 3: Cross multiply
    98,127.71x = 147,191.72 × 28,007.02
  4. Step 4: Simplify right side
    98,127.71x = 4,122,401,489.83
  5. Step 5: Solve for x
    x = 4,122,401,489.83/98,127.71
  6. Step 6: Final answer
    x = 42,010.58

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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.