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Finding the Fourth Proportional to 406,809.45, 561,620.49 and 277,941.69

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Solution

The fourth proportional to 406,809.45, 561,620.49 and 277,941.69 is: 383,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,809.45 : 561,620.49 = 277,941.69 : x
  2. Step 2: Convert to fraction form
    406,809.45/561,620.49 = 277,941.69/x
  3. Step 3: Cross multiply
    406,809.45x = 561,620.49 × 277,941.69
  4. Step 4: Simplify right side
    406,809.45x = 156,097,748,129.23
  5. Step 5: Solve for x
    x = 156,097,748,129.23/406,809.45
  6. Step 6: Final answer
    x = 383,712.20

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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.