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Finding the Fourth Proportional to 86,940.93, 130,323.16 and 49,423.48

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Solution

The fourth proportional to 86,940.93, 130,323.16 and 49,423.48 is: 74,085.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,940.93 : 130,323.16 = 49,423.48 : x
  2. Step 2: Convert to fraction form
    86,940.93/130,323.16 = 49,423.48/x
  3. Step 3: Cross multiply
    86,940.93x = 130,323.16 × 49,423.48
  4. Step 4: Simplify right side
    86,940.93x = 6,441,023,563.74
  5. Step 5: Solve for x
    x = 6,441,023,563.74/86,940.93
  6. Step 6: Final answer
    x = 74,085.06

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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.