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Finding the Fourth Proportional to 82,700,913.30, 124,051,369.95 and 55,491,134.10

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Solution

The fourth proportional to 82,700,913.30, 124,051,369.95 and 55,491,134.10 is: 83,236,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,700,913.30 : 124,051,369.95 = 55,491,134.10 : x
  2. Step 2: Convert to fraction form
    82,700,913.30/124,051,369.95 = 55,491,134.10/x
  3. Step 3: Cross multiply
    82,700,913.30x = 124,051,369.95 × 55,491,134.10
  4. Step 4: Simplify right side
    82,700,913.30x = 6,883,751,205,184,161
  5. Step 5: Solve for x
    x = 6,883,751,205,184,161/82,700,913.30
  6. Step 6: Final answer
    x = 83,236,701.15

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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.