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Finding the Fourth Proportional to 86,901.90, 119,926.74 and 48,661.12

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Solution

The fourth proportional to 86,901.90, 119,926.74 and 48,661.12 is: 67,153.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.90 : 119,926.74 = 48,661.12 : x
  2. Step 2: Convert to fraction form
    86,901.90/119,926.74 = 48,661.12/x
  3. Step 3: Cross multiply
    86,901.90x = 119,926.74 × 48,661.12
  4. Step 4: Simplify right side
    86,901.90x = 5,835,769,486.35
  5. Step 5: Solve for x
    x = 5,835,769,486.35/86,901.90
  6. Step 6: Final answer
    x = 67,153.53

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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.