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Finding the Fourth Proportional to 86,803.92, 130,279.62 and 61,904.94

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Solution

The fourth proportional to 86,803.92, 130,279.62 and 61,904.94 is: 92,910.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,803.92 : 130,279.62 = 61,904.94 : x
  2. Step 2: Convert to fraction form
    86,803.92/130,279.62 = 61,904.94/x
  3. Step 3: Cross multiply
    86,803.92x = 130,279.62 × 61,904.94
  4. Step 4: Simplify right side
    86,803.92x = 8,064,952,059.32
  5. Step 5: Solve for x
    x = 8,064,952,059.32/86,803.92
  6. Step 6: Final answer
    x = 92,910.00

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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.