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Finding the Fourth Proportional to 666,359.38, 919,576.05 and 360,435.63

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Solution

The fourth proportional to 666,359.38, 919,576.05 and 360,435.63 is: 497,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,359.38 : 919,576.05 = 360,435.63 : x
  2. Step 2: Convert to fraction form
    666,359.38/919,576.05 = 360,435.63/x
  3. Step 3: Cross multiply
    666,359.38x = 919,576.05 × 360,435.63
  4. Step 4: Simplify right side
    666,359.38x = 331,447,968,399.45
  5. Step 5: Solve for x
    x = 331,447,968,399.45/666,359.38
  6. Step 6: Final answer
    x = 497,401.22

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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.