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Finding the Fourth Proportional to 343,362.20, 515,196.90 and 156,277.40

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Solution

The fourth proportional to 343,362.20, 515,196.90 and 156,277.40 is: 234,486.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,362.20 : 515,196.90 = 156,277.40 : x
  2. Step 2: Convert to fraction form
    343,362.20/515,196.90 = 156,277.40/x
  3. Step 3: Cross multiply
    343,362.20x = 515,196.90 × 156,277.40
  4. Step 4: Simplify right side
    343,362.20x = 80,513,632,020.06
  5. Step 5: Solve for x
    x = 80,513,632,020.06/343,362.20
  6. Step 6: Final answer
    x = 234,486.01

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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.