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Finding the Fourth Proportional to 621,597.68, 857,724.09 and 349,656.38

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Solution

The fourth proportional to 621,597.68, 857,724.09 and 349,656.38 is: 482,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,597.68 : 857,724.09 = 349,656.38 : x
  2. Step 2: Convert to fraction form
    621,597.68/857,724.09 = 349,656.38/x
  3. Step 3: Cross multiply
    621,597.68x = 857,724.09 × 349,656.38
  4. Step 4: Simplify right side
    621,597.68x = 299,908,700,348.19
  5. Step 5: Solve for x
    x = 299,908,700,348.19/621,597.68
  6. Step 6: Final answer
    x = 482,480.40

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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.