Home / 209,366.45-288,972.21-127,712.76

Finding the Fourth Proportional to 209,366.45, 288,972.21 and 127,712.76

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Solution

The fourth proportional to 209,366.45, 288,972.21 and 127,712.76 is: 176,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,366.45 : 288,972.21 = 127,712.76 : x
  2. Step 2: Convert to fraction form
    209,366.45/288,972.21 = 127,712.76/x
  3. Step 3: Cross multiply
    209,366.45x = 288,972.21 × 127,712.76
  4. Step 4: Simplify right side
    209,366.45x = 36,905,437,992.03
  5. Step 5: Solve for x
    x = 36,905,437,992.03/209,366.45
  6. Step 6: Final answer
    x = 176,271.97

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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.