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Finding the Fourth Proportional to 604,840.80, 906,386.40 and 267,605.40

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Solution

The fourth proportional to 604,840.80, 906,386.40 and 267,605.40 is: 401,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,840.80 : 906,386.40 = 267,605.40 : x
  2. Step 2: Convert to fraction form
    604,840.80/906,386.40 = 267,605.40/x
  3. Step 3: Cross multiply
    604,840.80x = 906,386.40 × 267,605.40
  4. Step 4: Simplify right side
    604,840.80x = 242,553,895,126.56
  5. Step 5: Solve for x
    x = 242,553,895,126.56/604,840.80
  6. Step 6: Final answer
    x = 401,021.05

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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.