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Finding the Fourth Proportional to 103,341.80, 155,012.70 and 50,853.80

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Solution

The fourth proportional to 103,341.80, 155,012.70 and 50,853.80 is: 76,280.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,341.80 : 155,012.70 = 50,853.80 : x
  2. Step 2: Convert to fraction form
    103,341.80/155,012.70 = 50,853.80/x
  3. Step 3: Cross multiply
    103,341.80x = 155,012.70 × 50,853.80
  4. Step 4: Simplify right side
    103,341.80x = 7,882,984,843.26
  5. Step 5: Solve for x
    x = 7,882,984,843.26/103,341.80
  6. Step 6: Final answer
    x = 76,280.70

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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.