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Finding the Fourth Proportional to 117,767.79, 162,520.65 and 64,053.90

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Solution

The fourth proportional to 117,767.79, 162,520.65 and 64,053.90 is: 88,394.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,767.79 : 162,520.65 = 64,053.90 : x
  2. Step 2: Convert to fraction form
    117,767.79/162,520.65 = 64,053.90/x
  3. Step 3: Cross multiply
    117,767.79x = 162,520.65 × 64,053.90
  4. Step 4: Simplify right side
    117,767.79x = 10,410,081,463.04
  5. Step 5: Solve for x
    x = 10,410,081,463.04/117,767.79
  6. Step 6: Final answer
    x = 88,394.98

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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.