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Finding the Fourth Proportional to 191,930.20, 264,862.80 and 105,886.84

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Solution

The fourth proportional to 191,930.20, 264,862.80 and 105,886.84 is: 146,123.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,930.20 : 264,862.80 = 105,886.84 : x
  2. Step 2: Convert to fraction form
    191,930.20/264,862.80 = 105,886.84/x
  3. Step 3: Cross multiply
    191,930.20x = 264,862.80 × 105,886.84
  4. Step 4: Simplify right side
    191,930.20x = 28,045,484,925.55
  5. Step 5: Solve for x
    x = 28,045,484,925.55/191,930.20
  6. Step 6: Final answer
    x = 146,123.36

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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.