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Finding the Fourth Proportional to 98,616.48, 147,949.56 and 28,495.32

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Solution

The fourth proportional to 98,616.48, 147,949.56 and 28,495.32 is: 42,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,616.48 : 147,949.56 = 28,495.32 : x
  2. Step 2: Convert to fraction form
    98,616.48/147,949.56 = 28,495.32/x
  3. Step 3: Cross multiply
    98,616.48x = 147,949.56 × 28,495.32
  4. Step 4: Simplify right side
    98,616.48x = 4,215,870,056.06
  5. Step 5: Solve for x
    x = 4,215,870,056.06/98,616.48
  6. Step 6: Final answer
    x = 42,750.16

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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.