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Finding the Fourth Proportional to 103,612.20, 155,482.30 and 41,276.20

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Solution

The fourth proportional to 103,612.20, 155,482.30 and 41,276.20 is: 61,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.20 : 155,482.30 = 41,276.20 : x
  2. Step 2: Convert to fraction form
    103,612.20/155,482.30 = 41,276.20/x
  3. Step 3: Cross multiply
    103,612.20x = 155,482.30 × 41,276.20
  4. Step 4: Simplify right side
    103,612.20x = 6,417,718,511.26
  5. Step 5: Solve for x
    x = 6,417,718,511.26/103,612.20
  6. Step 6: Final answer
    x = 61,939.80

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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.