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Finding the Fourth Proportional to 529,431.40, 794,070.30 and 155,415.40

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Solution

The fourth proportional to 529,431.40, 794,070.30 and 155,415.40 is: 233,100.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,431.40 : 794,070.30 = 155,415.40 : x
  2. Step 2: Convert to fraction form
    529,431.40/794,070.30 = 155,415.40/x
  3. Step 3: Cross multiply
    529,431.40x = 794,070.30 × 155,415.40
  4. Step 4: Simplify right side
    529,431.40x = 123,410,753,302.62
  5. Step 5: Solve for x
    x = 123,410,753,302.62/529,431.40
  6. Step 6: Final answer
    x = 233,100.56

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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.