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Finding the Fourth Proportional to 386,466.40, 541,421.60 and 386,466.40

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Solution

The fourth proportional to 386,466.40, 541,421.60 and 386,466.40 is: 541,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,466.40 : 541,421.60 = 386,466.40 : x
  2. Step 2: Convert to fraction form
    386,466.40/541,421.60 = 386,466.40/x
  3. Step 3: Cross multiply
    386,466.40x = 541,421.60 × 386,466.40
  4. Step 4: Simplify right side
    386,466.40x = 209,241,256,634.24
  5. Step 5: Solve for x
    x = 209,241,256,634.24/386,466.40
  6. Step 6: Final answer
    x = 541,421.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.