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Finding the Fourth Proportional to 353,174.90, 529,762.35 and 103,856.90

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Solution

The fourth proportional to 353,174.90, 529,762.35 and 103,856.90 is: 155,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,174.90 : 529,762.35 = 103,856.90 : x
  2. Step 2: Convert to fraction form
    353,174.90/529,762.35 = 103,856.90/x
  3. Step 3: Cross multiply
    353,174.90x = 529,762.35 × 103,856.90
  4. Step 4: Simplify right side
    353,174.90x = 55,019,474,888.43
  5. Step 5: Solve for x
    x = 55,019,474,888.43/353,174.90
  6. Step 6: Final answer
    x = 155,785.35

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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.