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Finding the Fourth Proportional to 541,326.40, 811,989.60 and 245,838.40

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Solution

The fourth proportional to 541,326.40, 811,989.60 and 245,838.40 is: 368,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,326.40 : 811,989.60 = 245,838.40 : x
  2. Step 2: Convert to fraction form
    541,326.40/811,989.60 = 245,838.40/x
  3. Step 3: Cross multiply
    541,326.40x = 811,989.60 × 245,838.40
  4. Step 4: Simplify right side
    541,326.40x = 199,618,224,080.64
  5. Step 5: Solve for x
    x = 199,618,224,080.64/541,326.40
  6. Step 6: Final answer
    x = 368,757.60

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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.