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Finding the Fourth Proportional to 321,210.56, 443,255.64 and 176,015.48

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Solution

The fourth proportional to 321,210.56, 443,255.64 and 176,015.48 is: 242,893.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,210.56 : 443,255.64 = 176,015.48 : x
  2. Step 2: Convert to fraction form
    321,210.56/443,255.64 = 176,015.48/x
  3. Step 3: Cross multiply
    321,210.56x = 443,255.64 × 176,015.48
  4. Step 4: Simplify right side
    321,210.56x = 78,019,854,237.31
  5. Step 5: Solve for x
    x = 78,019,854,237.31/321,210.56
  6. Step 6: Final answer
    x = 242,893.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.