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Finding the Fourth Proportional to 86,803.14, 130,070.73 and 58,612.71

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Solution

The fourth proportional to 86,803.14, 130,070.73 and 58,612.71 is: 87,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,803.14 : 130,070.73 = 58,612.71 : x
  2. Step 2: Convert to fraction form
    86,803.14/130,070.73 = 58,612.71/x
  3. Step 3: Cross multiply
    86,803.14x = 130,070.73 × 58,612.71
  4. Step 4: Simplify right side
    86,803.14x = 7,623,797,976.98
  5. Step 5: Solve for x
    x = 7,623,797,976.98/86,803.14
  6. Step 6: Final answer
    x = 87,828.60

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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.