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Finding the Fourth Proportional to 401,059.75, 553,462.47 and 222,211.75

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Solution

The fourth proportional to 401,059.75, 553,462.47 and 222,211.75 is: 306,652.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,059.75 : 553,462.47 = 222,211.75 : x
  2. Step 2: Convert to fraction form
    401,059.75/553,462.47 = 222,211.75/x
  3. Step 3: Cross multiply
    401,059.75x = 553,462.47 × 222,211.75
  4. Step 4: Simplify right side
    401,059.75x = 122,985,864,018.02
  5. Step 5: Solve for x
    x = 122,985,864,018.02/401,059.75
  6. Step 6: Final answer
    x = 306,652.22

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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.