Home / 186,865,891.71-280,399,225.72-77,766,278.91

Finding the Fourth Proportional to 186,865,891.71, 280,399,225.72 and 77,766,278.91

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Solution

The fourth proportional to 186,865,891.71, 280,399,225.72 and 77,766,278.91 is: 116,691,195.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,865,891.71 : 280,399,225.72 = 77,766,278.91 : x
  2. Step 2: Convert to fraction form
    186,865,891.71/280,399,225.72 = 77,766,278.91/x
  3. Step 3: Cross multiply
    186,865,891.71x = 280,399,225.72 × 77,766,278.91
  4. Step 4: Simplify right side
    186,865,891.71x = 21,805,604,392,389,856
  5. Step 5: Solve for x
    x = 21,805,604,392,389,856/186,865,891.71
  6. Step 6: Final answer
    x = 116,691,195.99

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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.