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Finding the Fourth Proportional to 356,503.23, 534,728.12 and 103,785.66

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Solution

The fourth proportional to 356,503.23, 534,728.12 and 103,785.66 is: 155,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,503.23 : 534,728.12 = 103,785.66 : x
  2. Step 2: Convert to fraction form
    356,503.23/534,728.12 = 103,785.66/x
  3. Step 3: Cross multiply
    356,503.23x = 534,728.12 × 103,785.66
  4. Step 4: Simplify right side
    356,503.23x = 55,497,110,335.83
  5. Step 5: Solve for x
    x = 55,497,110,335.83/356,503.23
  6. Step 6: Final answer
    x = 155,670.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.