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Finding the Fourth Proportional to 191,866.19, 264,768.81 and 105,828.59

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Solution

The fourth proportional to 191,866.19, 264,768.81 and 105,828.59 is: 146,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,866.19 : 264,768.81 = 105,828.59 : x
  2. Step 2: Convert to fraction form
    191,866.19/264,768.81 = 105,828.59/x
  3. Step 3: Cross multiply
    191,866.19x = 264,768.81 × 105,828.59
  4. Step 4: Simplify right side
    191,866.19x = 28,020,109,730.46
  5. Step 5: Solve for x
    x = 28,020,109,730.46/191,866.19
  6. Step 6: Final answer
    x = 146,039.85

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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.