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Finding the Fourth Proportional to 391,411.94, 586,616.09 and 340,599.74

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Solution

The fourth proportional to 391,411.94, 586,616.09 and 340,599.74 is: 510,462.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,411.94 : 586,616.09 = 340,599.74 : x
  2. Step 2: Convert to fraction form
    391,411.94/586,616.09 = 340,599.74/x
  3. Step 3: Cross multiply
    391,411.94x = 586,616.09 × 340,599.74
  4. Step 4: Simplify right side
    391,411.94x = 199,801,283,097.74
  5. Step 5: Solve for x
    x = 199,801,283,097.74/391,411.94
  6. Step 6: Final answer
    x = 510,462.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.