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Finding the Fourth Proportional to 221,784.60, 332,697.86 and 61,871.16

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Solution

The fourth proportional to 221,784.60, 332,697.86 and 61,871.16 is: 92,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,784.60 : 332,697.86 = 61,871.16 : x
  2. Step 2: Convert to fraction form
    221,784.60/332,697.86 = 61,871.16/x
  3. Step 3: Cross multiply
    221,784.60x = 332,697.86 × 61,871.16
  4. Step 4: Simplify right side
    221,784.60x = 20,584,402,218.36
  5. Step 5: Solve for x
    x = 20,584,402,218.36/221,784.60
  6. Step 6: Final answer
    x = 92,812.59

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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.