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Finding the Fourth Proportional to 98,990.56, 148,427.52 and 39,776.32

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Solution

The fourth proportional to 98,990.56, 148,427.52 and 39,776.32 is: 59,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,990.56 : 148,427.52 = 39,776.32 : x
  2. Step 2: Convert to fraction form
    98,990.56/148,427.52 = 39,776.32/x
  3. Step 3: Cross multiply
    98,990.56x = 148,427.52 × 39,776.32
  4. Step 4: Simplify right side
    98,990.56x = 5,903,900,532.33
  5. Step 5: Solve for x
    x = 5,903,900,532.33/98,990.56
  6. Step 6: Final answer
    x = 59,641.05

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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.