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Finding the Fourth Proportional to 529,422.40, 794,056.80 and 155,406.40

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Solution

The fourth proportional to 529,422.40, 794,056.80 and 155,406.40 is: 233,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,422.40 : 794,056.80 = 155,406.40 : x
  2. Step 2: Convert to fraction form
    529,422.40/794,056.80 = 155,406.40/x
  3. Step 3: Cross multiply
    529,422.40x = 794,056.80 × 155,406.40
  4. Step 4: Simplify right side
    529,422.40x = 123,401,508,683.52
  5. Step 5: Solve for x
    x = 123,401,508,683.52/529,422.40
  6. Step 6: Final answer
    x = 233,087.06

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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.