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Finding the Fourth Proportional to 86,328.84, 119,152.14 and 58,018.11

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Solution

The fourth proportional to 86,328.84, 119,152.14 and 58,018.11 is: 80,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,328.84 : 119,152.14 = 58,018.11 : x
  2. Step 2: Convert to fraction form
    86,328.84/119,152.14 = 58,018.11/x
  3. Step 3: Cross multiply
    86,328.84x = 119,152.14 × 58,018.11
  4. Step 4: Simplify right side
    86,328.84x = 6,912,981,965.26
  5. Step 5: Solve for x
    x = 6,912,981,965.26/86,328.84
  6. Step 6: Final answer
    x = 80,077.32

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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.