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Finding the Fourth Proportional to 478,422.66, 660,223.06 and 263,562.72

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Solution

The fourth proportional to 478,422.66, 660,223.06 and 263,562.72 is: 363,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,422.66 : 660,223.06 = 263,562.72 : x
  2. Step 2: Convert to fraction form
    478,422.66/660,223.06 = 263,562.72/x
  3. Step 3: Cross multiply
    478,422.66x = 660,223.06 × 263,562.72
  4. Step 4: Simplify right side
    478,422.66x = 174,010,182,199.21
  5. Step 5: Solve for x
    x = 174,010,182,199.21/478,422.66
  6. Step 6: Final answer
    x = 363,716.43

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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.