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Finding the Fourth Proportional to 628,686.81, 943,021.02 and 155,372.22

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Solution

The fourth proportional to 628,686.81, 943,021.02 and 155,372.22 is: 233,056.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,686.81 : 943,021.02 = 155,372.22 : x
  2. Step 2: Convert to fraction form
    628,686.81/943,021.02 = 155,372.22/x
  3. Step 3: Cross multiply
    628,686.81x = 943,021.02 × 155,372.22
  4. Step 4: Simplify right side
    628,686.81x = 146,519,269,384.06
  5. Step 5: Solve for x
    x = 146,519,269,384.06/628,686.81
  6. Step 6: Final answer
    x = 233,056.06

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Similar ratio
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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.