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Finding the Fourth Proportional to 191,680.97, 264,521.54 and 105,643.11

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Solution

The fourth proportional to 191,680.97, 264,521.54 and 105,643.11 is: 145,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,680.97 : 264,521.54 = 105,643.11 : x
  2. Step 2: Convert to fraction form
    191,680.97/264,521.54 = 105,643.11/x
  3. Step 3: Cross multiply
    191,680.97x = 264,521.54 × 105,643.11
  4. Step 4: Simplify right side
    191,680.97x = 27,944,877,619.37
  5. Step 5: Solve for x
    x = 27,944,877,619.37/191,680.97
  6. Step 6: Final answer
    x = 145,788.48

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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.