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Finding the Fourth Proportional to 613,434.04, 920,040.08 and 186,867.78

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Solution

The fourth proportional to 613,434.04, 920,040.08 and 186,867.78 is: 280,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,434.04 : 920,040.08 = 186,867.78 : x
  2. Step 2: Convert to fraction form
    613,434.04/920,040.08 = 186,867.78/x
  3. Step 3: Cross multiply
    613,434.04x = 920,040.08 × 186,867.78
  4. Step 4: Simplify right side
    613,434.04x = 171,925,847,260.62
  5. Step 5: Solve for x
    x = 171,925,847,260.62/613,434.04
  6. Step 6: Final answer
    x = 280,267.86

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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.