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Finding the Fourth Proportional to 200,640,333.80, 300,960,500.70 and 85,849,077.80

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Solution

The fourth proportional to 200,640,333.80, 300,960,500.70 and 85,849,077.80 is: 128,773,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,640,333.80 : 300,960,500.70 = 85,849,077.80 : x
  2. Step 2: Convert to fraction form
    200,640,333.80/300,960,500.70 = 85,849,077.80/x
  3. Step 3: Cross multiply
    200,640,333.80x = 300,960,500.70 × 85,849,077.80
  4. Step 4: Simplify right side
    200,640,333.80x = 25,837,181,439,321,252
  5. Step 5: Solve for x
    x = 25,837,181,439,321,252/200,640,333.80
  6. Step 6: Final answer
    x = 128,773,616.70

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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.