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Finding the Fourth Proportional to 191,444.81, 287,167.14 and 51,199.79

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Solution

The fourth proportional to 191,444.81, 287,167.14 and 51,199.79 is: 76,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,444.81 : 287,167.14 = 51,199.79 : x
  2. Step 2: Convert to fraction form
    191,444.81/287,167.14 = 51,199.79/x
  3. Step 3: Cross multiply
    191,444.81x = 287,167.14 × 51,199.79
  4. Step 4: Simplify right side
    191,444.81x = 14,702,895,827.06
  5. Step 5: Solve for x
    x = 14,702,895,827.06/191,444.81
  6. Step 6: Final answer
    x = 76,799.66

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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.