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Finding the Fourth Proportional to 353,048.94, 529,568.80 and 86,811.76

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Solution

The fourth proportional to 353,048.94, 529,568.80 and 86,811.76 is: 130,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,048.94 : 529,568.80 = 86,811.76 : x
  2. Step 2: Convert to fraction form
    353,048.94/529,568.80 = 86,811.76/x
  3. Step 3: Cross multiply
    353,048.94x = 529,568.80 × 86,811.76
  4. Step 4: Simplify right side
    353,048.94x = 45,972,796,487.19
  5. Step 5: Solve for x
    x = 45,972,796,487.19/353,048.94
  6. Step 6: Final answer
    x = 130,216.50

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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.