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Finding the Fourth Proportional to 585,682.79, 808,301.87 and 356,255.90

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Solution

The fourth proportional to 585,682.79, 808,301.87 and 356,255.90 is: 491,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,682.79 : 808,301.87 = 356,255.90 : x
  2. Step 2: Convert to fraction form
    585,682.79/808,301.87 = 356,255.90/x
  3. Step 3: Cross multiply
    585,682.79x = 808,301.87 × 356,255.90
  4. Step 4: Simplify right side
    585,682.79x = 287,962,307,017.66
  5. Step 5: Solve for x
    x = 287,962,307,017.66/585,682.79
  6. Step 6: Final answer
    x = 491,669.40

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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.