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Finding the Fourth Proportional to 310,756.02, 428,856.10 and 174,796.30

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Solution

The fourth proportional to 310,756.02, 428,856.10 and 174,796.30 is: 241,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,756.02 : 428,856.10 = 174,796.30 : x
  2. Step 2: Convert to fraction form
    310,756.02/428,856.10 = 174,796.30/x
  3. Step 3: Cross multiply
    310,756.02x = 428,856.10 × 174,796.30
  4. Step 4: Simplify right side
    310,756.02x = 74,962,459,512.43
  5. Step 5: Solve for x
    x = 74,962,459,512.43/310,756.02
  6. Step 6: Final answer
    x = 241,226.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.