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Finding the Fourth Proportional to 211,155.12, 316,733.58 and 61,396.02

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Solution

The fourth proportional to 211,155.12, 316,733.58 and 61,396.02 is: 92,094.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,155.12 : 316,733.58 = 61,396.02 : x
  2. Step 2: Convert to fraction form
    211,155.12/316,733.58 = 61,396.02/x
  3. Step 3: Cross multiply
    211,155.12x = 316,733.58 × 61,396.02
  4. Step 4: Simplify right side
    211,155.12x = 19,446,181,212.35
  5. Step 5: Solve for x
    x = 19,446,181,212.35/211,155.12
  6. Step 6: Final answer
    x = 92,094.29

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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.