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Finding the Fourth Proportional to 170,606.40, 255,928.80 and 52,276.80

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Solution

The fourth proportional to 170,606.40, 255,928.80 and 52,276.80 is: 78,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,606.40 : 255,928.80 = 52,276.80 : x
  2. Step 2: Convert to fraction form
    170,606.40/255,928.80 = 52,276.80/x
  3. Step 3: Cross multiply
    170,606.40x = 255,928.80 × 52,276.80
  4. Step 4: Simplify right side
    170,606.40x = 13,379,138,691.84
  5. Step 5: Solve for x
    x = 13,379,138,691.84/170,606.40
  6. Step 6: Final answer
    x = 78,421.08

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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.