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Finding the Fourth Proportional to 621,610.64, 857,797.80 and 349,683.92

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Solution

The fourth proportional to 621,610.64, 857,797.80 and 349,683.92 is: 482,549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,610.64 : 857,797.80 = 349,683.92 : x
  2. Step 2: Convert to fraction form
    621,610.64/857,797.80 = 349,683.92/x
  3. Step 3: Cross multiply
    621,610.64x = 857,797.80 × 349,683.92
  4. Step 4: Simplify right side
    621,610.64x = 299,958,097,271.38
  5. Step 5: Solve for x
    x = 299,958,097,271.38/621,610.64
  6. Step 6: Final answer
    x = 482,549.81

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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.