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Finding the Fourth Proportional to 77,999.70, 116,999.55 and 38,548.65

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Solution

The fourth proportional to 77,999.70, 116,999.55 and 38,548.65 is: 57,822.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.70 : 116,999.55 = 38,548.65 : x
  2. Step 2: Convert to fraction form
    77,999.70/116,999.55 = 38,548.65/x
  3. Step 3: Cross multiply
    77,999.70x = 116,999.55 × 38,548.65
  4. Step 4: Simplify right side
    77,999.70x = 4,510,174,703.11
  5. Step 5: Solve for x
    x = 4,510,174,703.11/77,999.70
  6. Step 6: Final answer
    x = 57,822.98

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Similar ratio
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1.5x scale

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.