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Finding the Fourth Proportional to 476,089.05, 656,980.91 and 261,223.77

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Solution

The fourth proportional to 476,089.05, 656,980.91 and 261,223.77 is: 360,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,089.05 : 656,980.91 = 261,223.77 : x
  2. Step 2: Convert to fraction form
    476,089.05/656,980.91 = 261,223.77/x
  3. Step 3: Cross multiply
    476,089.05x = 656,980.91 × 261,223.77
  4. Step 4: Simplify right side
    476,089.05x = 171,619,028,822.11
  5. Step 5: Solve for x
    x = 171,619,028,822.11/476,089.05
  6. Step 6: Final answer
    x = 360,476.74

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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.