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Finding the Fourth Proportional to 629,618.82, 868,876.91 and 357,701.64

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Solution

The fourth proportional to 629,618.82, 868,876.91 and 357,701.64 is: 493,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,618.82 : 868,876.91 = 357,701.64 : x
  2. Step 2: Convert to fraction form
    629,618.82/868,876.91 = 357,701.64/x
  3. Step 3: Cross multiply
    629,618.82x = 868,876.91 × 357,701.64
  4. Step 4: Simplify right side
    629,618.82x = 310,798,691,959.72
  5. Step 5: Solve for x
    x = 310,798,691,959.72/629,618.82
  6. Step 6: Final answer
    x = 493,629.93

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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.