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Finding the Fourth Proportional to 438,147.64, 604,643.22 and 236,943.64

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Solution

The fourth proportional to 438,147.64, 604,643.22 and 236,943.64 is: 326,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,147.64 : 604,643.22 = 236,943.64 : x
  2. Step 2: Convert to fraction form
    438,147.64/604,643.22 = 236,943.64/x
  3. Step 3: Cross multiply
    438,147.64x = 604,643.22 × 236,943.64
  4. Step 4: Simplify right side
    438,147.64x = 143,266,365,448.12
  5. Step 5: Solve for x
    x = 143,266,365,448.12/438,147.64
  6. Step 6: Final answer
    x = 326,981.94

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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.