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Finding the Fourth Proportional to 401,312.56, 553,817.56 and 220,041.04

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Solution

The fourth proportional to 401,312.56, 553,817.56 and 220,041.04 is: 303,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,312.56 : 553,817.56 = 220,041.04 : x
  2. Step 2: Convert to fraction form
    401,312.56/553,817.56 = 220,041.04/x
  3. Step 3: Cross multiply
    401,312.56x = 553,817.56 × 220,041.04
  4. Step 4: Simplify right side
    401,312.56x = 121,862,591,872.66
  5. Step 5: Solve for x
    x = 121,862,591,872.66/401,312.56
  6. Step 6: Final answer
    x = 303,660.05

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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.