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Finding the Fourth Proportional to 194,437.80, 291,426.30 and 82,117.80

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Solution

The fourth proportional to 194,437.80, 291,426.30 and 82,117.80 is: 123,079.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,437.80 : 291,426.30 = 82,117.80 : x
  2. Step 2: Convert to fraction form
    194,437.80/291,426.30 = 82,117.80/x
  3. Step 3: Cross multiply
    194,437.80x = 291,426.30 × 82,117.80
  4. Step 4: Simplify right side
    194,437.80x = 23,931,286,618.14
  5. Step 5: Solve for x
    x = 23,931,286,618.14/194,437.80
  6. Step 6: Final answer
    x = 123,079.39

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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.