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Finding the Fourth Proportional to 283,797.51, 391,643.21 and 156,477.63

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Solution

The fourth proportional to 283,797.51, 391,643.21 and 156,477.63 is: 215,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,797.51 : 391,643.21 = 156,477.63 : x
  2. Step 2: Convert to fraction form
    283,797.51/391,643.21 = 156,477.63/x
  3. Step 3: Cross multiply
    283,797.51x = 391,643.21 × 156,477.63
  4. Step 4: Simplify right side
    283,797.51x = 61,283,401,306.39
  5. Step 5: Solve for x
    x = 61,283,401,306.39/283,797.51
  6. Step 6: Final answer
    x = 215,940.59

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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.