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Finding the Fourth Proportional to 621,252.85, 857,399.51 and 345,637.97

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Solution

The fourth proportional to 621,252.85, 857,399.51 and 345,637.97 is: 477,019.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,252.85 : 857,399.51 = 345,637.97 : x
  2. Step 2: Convert to fraction form
    621,252.85/857,399.51 = 345,637.97/x
  3. Step 3: Cross multiply
    621,252.85x = 857,399.51 × 345,637.97
  4. Step 4: Simplify right side
    621,252.85x = 296,349,824,387.21
  5. Step 5: Solve for x
    x = 296,349,824,387.21/621,252.85
  6. Step 6: Final answer
    x = 477,019.67

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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.