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Finding the Fourth Proportional to 98,572.95, 147,885.36 and 51,191.19

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Solution

The fourth proportional to 98,572.95, 147,885.36 and 51,191.19 is: 76,800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,572.95 : 147,885.36 = 51,191.19 : x
  2. Step 2: Convert to fraction form
    98,572.95/147,885.36 = 51,191.19/x
  3. Step 3: Cross multiply
    98,572.95x = 147,885.36 × 51,191.19
  4. Step 4: Simplify right side
    98,572.95x = 7,570,427,561.98
  5. Step 5: Solve for x
    x = 7,570,427,561.98/98,572.95
  6. Step 6: Final answer
    x = 76,800.25

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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.