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Finding the Fourth Proportional to 98,879.64, 148,341.48 and 54,483.54

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Solution

The fourth proportional to 98,879.64, 148,341.48 and 54,483.54 is: 81,737.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,879.64 : 148,341.48 = 54,483.54 : x
  2. Step 2: Convert to fraction form
    98,879.64/148,341.48 = 54,483.54/x
  3. Step 3: Cross multiply
    98,879.64x = 148,341.48 × 54,483.54
  4. Step 4: Simplify right side
    98,879.64x = 8,082,168,959.24
  5. Step 5: Solve for x
    x = 8,082,168,959.24/98,879.64
  6. Step 6: Final answer
    x = 81,737.44

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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.