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Finding the Fourth Proportional to 808,072.56, 1,115,089.56 and 445,477.68

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Solution

The fourth proportional to 808,072.56, 1,115,089.56 and 445,477.68 is: 614,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,072.56 : 1,115,089.56 = 445,477.68 : x
  2. Step 2: Convert to fraction form
    808,072.56/1,115,089.56 = 445,477.68/x
  3. Step 3: Cross multiply
    808,072.56x = 1,115,089.56 × 445,477.68
  4. Step 4: Simplify right side
    808,072.56x = 496,747,510,181.02
  5. Step 5: Solve for x
    x = 496,747,510,181.02/808,072.56
  6. Step 6: Final answer
    x = 614,731.32

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Double scale
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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.