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Finding the Fourth Proportional to 191,051.61, 286,140.42 and 91,281.89

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Solution

The fourth proportional to 191,051.61, 286,140.42 and 91,281.89 is: 136,714.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,051.61 : 286,140.42 = 91,281.89 : x
  2. Step 2: Convert to fraction form
    191,051.61/286,140.42 = 91,281.89/x
  3. Step 3: Cross multiply
    191,051.61x = 286,140.42 × 91,281.89
  4. Step 4: Simplify right side
    191,051.61x = 26,119,436,912.29
  5. Step 5: Solve for x
    x = 26,119,436,912.29/191,051.61
  6. Step 6: Final answer
    x = 136,714.04

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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.