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Finding the Fourth Proportional to 807,830.76, 1,114,855.14 and 445,254.12

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Solution

The fourth proportional to 807,830.76, 1,114,855.14 and 445,254.12 is: 614,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,830.76 : 1,114,855.14 = 445,254.12 : x
  2. Step 2: Convert to fraction form
    807,830.76/1,114,855.14 = 445,254.12/x
  3. Step 3: Cross multiply
    807,830.76x = 1,114,855.14 × 445,254.12
  4. Step 4: Simplify right side
    807,830.76x = 496,393,844,288.18
  5. Step 5: Solve for x
    x = 496,393,844,288.18/807,830.76
  6. Step 6: Final answer
    x = 614,477.52

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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.