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Finding the Fourth Proportional to 191,624.66, 287,559.96 and 128,516.02

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Solution

The fourth proportional to 191,624.66, 287,559.96 and 128,516.02 is: 192,856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,624.66 : 287,559.96 = 128,516.02 : x
  2. Step 2: Convert to fraction form
    191,624.66/287,559.96 = 128,516.02/x
  3. Step 3: Cross multiply
    191,624.66x = 287,559.96 × 128,516.02
  4. Step 4: Simplify right side
    191,624.66x = 36,956,061,570.56
  5. Step 5: Solve for x
    x = 36,956,061,570.56/191,624.66
  6. Step 6: Final answer
    x = 192,856.50

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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.