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Finding the Fourth Proportional to 636,932.12, 878,990.51 and 365,052.48

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Solution

The fourth proportional to 636,932.12, 878,990.51 and 365,052.48 is: 503,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,932.12 : 878,990.51 = 365,052.48 : x
  2. Step 2: Convert to fraction form
    636,932.12/878,990.51 = 365,052.48/x
  3. Step 3: Cross multiply
    636,932.12x = 878,990.51 × 365,052.48
  4. Step 4: Simplify right side
    636,932.12x = 320,877,666,484.60
  5. Step 5: Solve for x
    x = 320,877,666,484.60/636,932.12
  6. Step 6: Final answer
    x = 503,786.28

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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.