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Finding the Fourth Proportional to 98,681.04, 148,041 and 28,560.96

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Solution

The fourth proportional to 98,681.04, 148,041 and 28,560.96 is: 42,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,681.04 : 148,041 = 28,560.96 : x
  2. Step 2: Convert to fraction form
    98,681.04/148,041 = 28,560.96/x
  3. Step 3: Cross multiply
    98,681.04x = 148,041 × 28,560.96
  4. Step 4: Simplify right side
    98,681.04x = 4,228,193,079.36
  5. Step 5: Solve for x
    x = 4,228,193,079.36/98,681.04
  6. Step 6: Final answer
    x = 42,847.07

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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.