Home / 77,894,384.43-106,931,354.10-66,861,980.91

Finding the Fourth Proportional to 77,894,384.43, 106,931,354.10 and 66,861,980.91

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Solution

The fourth proportional to 77,894,384.43, 106,931,354.10 and 66,861,980.91 is: 91,786,361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894,384.43 : 106,931,354.10 = 66,861,980.91 : x
  2. Step 2: Convert to fraction form
    77,894,384.43/106,931,354.10 = 66,861,980.91/x
  3. Step 3: Cross multiply
    77,894,384.43x = 106,931,354.10 × 66,861,980.91
  4. Step 4: Simplify right side
    77,894,384.43x = 7,149,642,156,514,649
  5. Step 5: Solve for x
    x = 7,149,642,156,514,649/77,894,384.43
  6. Step 6: Final answer
    x = 91,786,361.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.