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Finding the Fourth Proportional to 580,639.84, 871,014.96 and 225,681.28

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Solution

The fourth proportional to 580,639.84, 871,014.96 and 225,681.28 is: 338,543.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,639.84 : 871,014.96 = 225,681.28 : x
  2. Step 2: Convert to fraction form
    580,639.84/871,014.96 = 225,681.28/x
  3. Step 3: Cross multiply
    580,639.84x = 871,014.96 × 225,681.28
  4. Step 4: Simplify right side
    580,639.84x = 196,571,771,071.95
  5. Step 5: Solve for x
    x = 196,571,771,071.95/580,639.84
  6. Step 6: Final answer
    x = 338,543.37

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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.