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Finding the Fourth Proportional to 613,045.71, 919,700.91 and 186,614.88

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Solution

The fourth proportional to 613,045.71, 919,700.91 and 186,614.88 is: 279,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,045.71 : 919,700.91 = 186,614.88 : x
  2. Step 2: Convert to fraction form
    613,045.71/919,700.91 = 186,614.88/x
  3. Step 3: Cross multiply
    613,045.71x = 919,700.91 × 186,614.88
  4. Step 4: Simplify right side
    613,045.71x = 171,629,874,955.54
  5. Step 5: Solve for x
    x = 171,629,874,955.54/613,045.71
  6. Step 6: Final answer
    x = 279,962.61

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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.