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Finding the Fourth Proportional to 374,681.75, 517,069.70 and 213,551.79

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Solution

The fourth proportional to 374,681.75, 517,069.70 and 213,551.79 is: 294,706.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,681.75 : 517,069.70 = 213,551.79 : x
  2. Step 2: Convert to fraction form
    374,681.75/517,069.70 = 213,551.79/x
  3. Step 3: Cross multiply
    374,681.75x = 517,069.70 × 213,551.79
  4. Step 4: Simplify right side
    374,681.75x = 110,421,158,922.00
  5. Step 5: Solve for x
    x = 110,421,158,922.00/374,681.75
  6. Step 6: Final answer
    x = 294,706.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.