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Finding the Fourth Proportional to 807,693.66, 1,114,624.82 and 445,130.78

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Solution

The fourth proportional to 807,693.66, 1,114,624.82 and 445,130.78 is: 614,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,693.66 : 1,114,624.82 = 445,130.78 : x
  2. Step 2: Convert to fraction form
    807,693.66/1,114,624.82 = 445,130.78/x
  3. Step 3: Cross multiply
    807,693.66x = 1,114,624.82 × 445,130.78
  4. Step 4: Simplify right side
    807,693.66x = 496,153,815,533.96
  5. Step 5: Solve for x
    x = 496,153,815,533.96/807,693.66
  6. Step 6: Final answer
    x = 614,284.65

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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.