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Finding the Fourth Proportional to 191,584.50, 287,508.78 and 66,925.50

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Solution

The fourth proportional to 191,584.50, 287,508.78 and 66,925.50 is: 100,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,584.50 : 287,508.78 = 66,925.50 : x
  2. Step 2: Convert to fraction form
    191,584.50/287,508.78 = 66,925.50/x
  3. Step 3: Cross multiply
    191,584.50x = 287,508.78 × 66,925.50
  4. Step 4: Simplify right side
    191,584.50x = 19,241,668,855.89
  5. Step 5: Solve for x
    x = 19,241,668,855.89/191,584.50
  6. Step 6: Final answer
    x = 100,434.37

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1.5x scale

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.