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Finding the Fourth Proportional to 563,172.77, 777,171.98 and 305,044.81

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Solution

The fourth proportional to 563,172.77, 777,171.98 and 305,044.81 is: 420,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,172.77 : 777,171.98 = 305,044.81 : x
  2. Step 2: Convert to fraction form
    563,172.77/777,171.98 = 305,044.81/x
  3. Step 3: Cross multiply
    563,172.77x = 777,171.98 × 305,044.81
  4. Step 4: Simplify right side
    563,172.77x = 237,072,277,796.11
  5. Step 5: Solve for x
    x = 237,072,277,796.11/563,172.77
  6. Step 6: Final answer
    x = 420,958.34

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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.