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Finding the Fourth Proportional to 354,040.72, 531,061.08 and 104,703.28

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Solution

The fourth proportional to 354,040.72, 531,061.08 and 104,703.28 is: 157,054.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,040.72 : 531,061.08 = 104,703.28 : x
  2. Step 2: Convert to fraction form
    354,040.72/531,061.08 = 104,703.28/x
  3. Step 3: Cross multiply
    354,040.72x = 531,061.08 × 104,703.28
  4. Step 4: Simplify right side
    354,040.72x = 55,603,836,956.34
  5. Step 5: Solve for x
    x = 55,603,836,956.34/354,040.72
  6. Step 6: Final answer
    x = 157,054.92

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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.