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Finding the Fourth Proportional to 291,700.40, 436,859.40 and 197,697.20

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Solution

The fourth proportional to 291,700.40, 436,859.40 and 197,697.20 is: 296,077.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,700.40 : 436,859.40 = 197,697.20 : x
  2. Step 2: Convert to fraction form
    291,700.40/436,859.40 = 197,697.20/x
  3. Step 3: Cross multiply
    291,700.40x = 436,859.40 × 197,697.20
  4. Step 4: Simplify right side
    291,700.40x = 86,365,880,173.68
  5. Step 5: Solve for x
    x = 86,365,880,173.68/291,700.40
  6. Step 6: Final answer
    x = 296,077.35

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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.