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Finding the Fourth Proportional to 868,061.70, 1,302,092.70 and 362,346.80

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Solution

The fourth proportional to 868,061.70, 1,302,092.70 and 362,346.80 is: 543,520.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,061.70 : 1,302,092.70 = 362,346.80 : x
  2. Step 2: Convert to fraction form
    868,061.70/1,302,092.70 = 362,346.80/x
  3. Step 3: Cross multiply
    868,061.70x = 1,302,092.70 × 362,346.80
  4. Step 4: Simplify right side
    868,061.70x = 471,809,123,148.36
  5. Step 5: Solve for x
    x = 471,809,123,148.36/868,061.70
  6. Step 6: Final answer
    x = 543,520.26

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Double scale
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Similar ratio
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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.