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Finding the Fourth Proportional to 543,066.40, 814,595.55 and 163,986.40

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Solution

The fourth proportional to 543,066.40, 814,595.55 and 163,986.40 is: 245,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,066.40 : 814,595.55 = 163,986.40 : x
  2. Step 2: Convert to fraction form
    543,066.40/814,595.55 = 163,986.40/x
  3. Step 3: Cross multiply
    543,066.40x = 814,595.55 × 163,986.40
  4. Step 4: Simplify right side
    543,066.40x = 133,582,591,700.52
  5. Step 5: Solve for x
    x = 133,582,591,700.52/543,066.40
  6. Step 6: Final answer
    x = 245,978.38

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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.