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Finding the Fourth Proportional to 621,287.66, 931,822.14 and 165,884.56

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Solution

The fourth proportional to 621,287.66, 931,822.14 and 165,884.56 is: 248,797.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,287.66 : 931,822.14 = 165,884.56 : x
  2. Step 2: Convert to fraction form
    621,287.66/931,822.14 = 165,884.56/x
  3. Step 3: Cross multiply
    621,287.66x = 931,822.14 × 165,884.56
  4. Step 4: Simplify right side
    621,287.66x = 154,574,905,692.16
  5. Step 5: Solve for x
    x = 154,574,905,692.16/621,287.66
  6. Step 6: Final answer
    x = 248,797.64

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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.