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Finding the Fourth Proportional to 191,881.69, 287,888.90 and 65,610.81

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Solution

The fourth proportional to 191,881.69, 287,888.90 and 65,610.81 is: 98,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,881.69 : 287,888.90 = 65,610.81 : x
  2. Step 2: Convert to fraction form
    191,881.69/287,888.90 = 65,610.81/x
  3. Step 3: Cross multiply
    191,881.69x = 287,888.90 × 65,610.81
  4. Step 4: Simplify right side
    191,881.69x = 18,888,623,590.96
  5. Step 5: Solve for x
    x = 18,888,623,590.96/191,881.69
  6. Step 6: Final answer
    x = 98,438.91

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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.