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Finding the Fourth Proportional to 520,670.07, 781,129.71 and 183,786.35

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Solution

The fourth proportional to 520,670.07, 781,129.71 and 183,786.35 is: 275,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,670.07 : 781,129.71 = 183,786.35 : x
  2. Step 2: Convert to fraction form
    520,670.07/781,129.71 = 183,786.35/x
  3. Step 3: Cross multiply
    520,670.07x = 781,129.71 × 183,786.35
  4. Step 4: Simplify right side
    520,670.07x = 143,560,974,371.81
  5. Step 5: Solve for x
    x = 143,560,974,371.81/520,670.07
  6. Step 6: Final answer
    x = 275,723.50

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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.