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Finding the Fourth Proportional to 443,223.77, 660,619.40 and 417,998.75

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Solution

The fourth proportional to 443,223.77, 660,619.40 and 417,998.75 is: 623,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,223.77 : 660,619.40 = 417,998.75 : x
  2. Step 2: Convert to fraction form
    443,223.77/660,619.40 = 417,998.75/x
  3. Step 3: Cross multiply
    443,223.77x = 660,619.40 × 417,998.75
  4. Step 4: Simplify right side
    443,223.77x = 276,138,078,032.66
  5. Step 5: Solve for x
    x = 276,138,078,032.66/443,223.77
  6. Step 6: Final answer
    x = 623,021.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.