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Finding the Fourth Proportional to 621,803.10, 933,251.40 and 368,767.20

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Solution

The fourth proportional to 621,803.10, 933,251.40 and 368,767.20 is: 553,475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,803.10 : 933,251.40 = 368,767.20 : x
  2. Step 2: Convert to fraction form
    621,803.10/933,251.40 = 368,767.20/x
  3. Step 3: Cross multiply
    621,803.10x = 933,251.40 × 368,767.20
  4. Step 4: Simplify right side
    621,803.10x = 344,152,505,674.08
  5. Step 5: Solve for x
    x = 344,152,505,674.08/621,803.10
  6. Step 6: Final answer
    x = 553,475.06

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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.