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Finding the Fourth Proportional to 406,589.76, 561,367.72 and 253,860.48

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Solution

The fourth proportional to 406,589.76, 561,367.72 and 253,860.48 is: 350,498.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,589.76 : 561,367.72 = 253,860.48 : x
  2. Step 2: Convert to fraction form
    406,589.76/561,367.72 = 253,860.48/x
  3. Step 3: Cross multiply
    406,589.76x = 561,367.72 × 253,860.48
  4. Step 4: Simplify right side
    406,589.76x = 142,509,078,855.71
  5. Step 5: Solve for x
    x = 142,509,078,855.71/406,589.76
  6. Step 6: Final answer
    x = 350,498.45

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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.