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Finding the Fourth Proportional to 69,929.64, 96,608.35 and 56,477.54

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Solution

The fourth proportional to 69,929.64, 96,608.35 and 56,477.54 is: 78,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,929.64 : 96,608.35 = 56,477.54 : x
  2. Step 2: Convert to fraction form
    69,929.64/96,608.35 = 56,477.54/x
  3. Step 3: Cross multiply
    69,929.64x = 96,608.35 × 56,477.54
  4. Step 4: Simplify right side
    69,929.64x = 5,456,201,951.46
  5. Step 5: Solve for x
    x = 5,456,201,951.46/69,929.64
  6. Step 6: Final answer
    x = 78,024.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.