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Finding the Fourth Proportional to 621,840.98, 931,990.46 and 441,639.07

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Solution

The fourth proportional to 621,840.98, 931,990.46 and 441,639.07 is: 661,911.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,840.98 : 931,990.46 = 441,639.07 : x
  2. Step 2: Convert to fraction form
    621,840.98/931,990.46 = 441,639.07/x
  3. Step 3: Cross multiply
    621,840.98x = 931,990.46 × 441,639.07
  4. Step 4: Simplify right side
    621,840.98x = 411,603,395,465.10
  5. Step 5: Solve for x
    x = 411,603,395,465.10/621,840.98
  6. Step 6: Final answer
    x = 661,911.01

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1.5x scale

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.