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Finding the Fourth Proportional to 86,999.54, 120,069.33 and 48,769.41

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Solution

The fourth proportional to 86,999.54, 120,069.33 and 48,769.41 is: 67,307.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.54 : 120,069.33 = 48,769.41 : x
  2. Step 2: Convert to fraction form
    86,999.54/120,069.33 = 48,769.41/x
  3. Step 3: Cross multiply
    86,999.54x = 120,069.33 × 48,769.41
  4. Step 4: Simplify right side
    86,999.54x = 5,855,710,383.20
  5. Step 5: Solve for x
    x = 5,855,710,383.20/86,999.54
  6. Step 6: Final answer
    x = 67,307.38

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1.5x scale

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.