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Finding the Fourth Proportional to 406,799.70, 561,607.01 and 277,931.94

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Solution

The fourth proportional to 406,799.70, 561,607.01 and 277,931.94 is: 383,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,799.70 : 561,607.01 = 277,931.94 : x
  2. Step 2: Convert to fraction form
    406,799.70/561,607.01 = 277,931.94/x
  3. Step 3: Cross multiply
    406,799.70x = 561,607.01 × 277,931.94
  4. Step 4: Simplify right side
    406,799.70x = 156,088,525,806.90
  5. Step 5: Solve for x
    x = 156,088,525,806.90/406,799.70
  6. Step 6: Final answer
    x = 383,698.72

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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.