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Finding the Fourth Proportional to 98,813.56, 147,929.65 and 61,253.05

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Solution

The fourth proportional to 98,813.56, 147,929.65 and 61,253.05 is: 91,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,813.56 : 147,929.65 = 61,253.05 : x
  2. Step 2: Convert to fraction form
    98,813.56/147,929.65 = 61,253.05/x
  3. Step 3: Cross multiply
    98,813.56x = 147,929.65 × 61,253.05
  4. Step 4: Simplify right side
    98,813.56x = 9,061,141,724.98
  5. Step 5: Solve for x
    x = 9,061,141,724.98/98,813.56
  6. Step 6: Final answer
    x = 91,699.38

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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.