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Finding the Fourth Proportional to 86,802.12, 119,786.31 and 48,561.48

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Solution

The fourth proportional to 86,802.12, 119,786.31 and 48,561.48 is: 67,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,802.12 : 119,786.31 = 48,561.48 : x
  2. Step 2: Convert to fraction form
    86,802.12/119,786.31 = 48,561.48/x
  3. Step 3: Cross multiply
    86,802.12x = 119,786.31 × 48,561.48
  4. Step 4: Simplify right side
    86,802.12x = 5,817,000,497.34
  5. Step 5: Solve for x
    x = 5,817,000,497.34/86,802.12
  6. Step 6: Final answer
    x = 67,014.50

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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.