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Finding the Fourth Proportional to 191,853.84, 287,605.44 and 67,126.80

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Solution

The fourth proportional to 191,853.84, 287,605.44 and 67,126.80 is: 100,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,853.84 : 287,605.44 = 67,126.80 : x
  2. Step 2: Convert to fraction form
    191,853.84/287,605.44 = 67,126.80/x
  3. Step 3: Cross multiply
    191,853.84x = 287,605.44 × 67,126.80
  4. Step 4: Simplify right side
    191,853.84x = 19,306,032,849.79
  5. Step 5: Solve for x
    x = 19,306,032,849.79/191,853.84
  6. Step 6: Final answer
    x = 100,628.86

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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.