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Finding the Fourth Proportional to 621,633.58, 857,853.07 and 349,701.66

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Solution

The fourth proportional to 621,633.58, 857,853.07 and 349,701.66 is: 482,587.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,633.58 : 857,853.07 = 349,701.66 : x
  2. Step 2: Convert to fraction form
    621,633.58/857,853.07 = 349,701.66/x
  3. Step 3: Cross multiply
    621,633.58x = 857,853.07 × 349,701.66
  4. Step 4: Simplify right side
    621,633.58x = 299,992,642,615.10
  5. Step 5: Solve for x
    x = 299,992,642,615.10/621,633.58
  6. Step 6: Final answer
    x = 482,587.58

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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.