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Finding the Fourth Proportional to 197,139.90, 276,695.70 and 197,139.90

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Solution

The fourth proportional to 197,139.90, 276,695.70 and 197,139.90 is: 276,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,139.90 : 276,695.70 = 197,139.90 : x
  2. Step 2: Convert to fraction form
    197,139.90/276,695.70 = 197,139.90/x
  3. Step 3: Cross multiply
    197,139.90x = 276,695.70 × 197,139.90
  4. Step 4: Simplify right side
    197,139.90x = 54,547,762,628.43
  5. Step 5: Solve for x
    x = 54,547,762,628.43/197,139.90
  6. Step 6: Final answer
    x = 276,695.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.