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Finding the Fourth Proportional to 98,468.84, 147,751.46 and 61,018.90

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Solution

The fourth proportional to 98,468.84, 147,751.46 and 61,018.90 is: 91,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,468.84 : 147,751.46 = 61,018.90 : x
  2. Step 2: Convert to fraction form
    98,468.84/147,751.46 = 61,018.90/x
  3. Step 3: Cross multiply
    98,468.84x = 147,751.46 × 61,018.90
  4. Step 4: Simplify right side
    98,468.84x = 9,015,631,562.59
  5. Step 5: Solve for x
    x = 9,015,631,562.59/98,468.84
  6. Step 6: Final answer
    x = 91,558.22

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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.