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Finding the Fourth Proportional to 552,402.03, 762,289.61 and 307,398.90

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Solution

The fourth proportional to 552,402.03, 762,289.61 and 307,398.90 is: 424,196.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,402.03 : 762,289.61 = 307,398.90 : x
  2. Step 2: Convert to fraction form
    552,402.03/762,289.61 = 307,398.90/x
  3. Step 3: Cross multiply
    552,402.03x = 762,289.61 × 307,398.90
  4. Step 4: Simplify right side
    552,402.03x = 234,326,986,058.44
  5. Step 5: Solve for x
    x = 234,326,986,058.44/552,402.03
  6. Step 6: Final answer
    x = 424,196.46

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1.5x scale

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.