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Finding the Fourth Proportional to 353,230.74, 529,841.40 and 86,993.46

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Solution

The fourth proportional to 353,230.74, 529,841.40 and 86,993.46 is: 130,489.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,230.74 : 529,841.40 = 86,993.46 : x
  2. Step 2: Convert to fraction form
    353,230.74/529,841.40 = 86,993.46/x
  3. Step 3: Cross multiply
    353,230.74x = 529,841.40 × 86,993.46
  4. Step 4: Simplify right side
    353,230.74x = 46,092,736,637.24
  5. Step 5: Solve for x
    x = 46,092,736,637.24/353,230.74
  6. Step 6: Final answer
    x = 130,489.03

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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.