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Finding the Fourth Proportional to 211,188.54, 316,836.48 and 61,428.83

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Solution

The fourth proportional to 211,188.54, 316,836.48 and 61,428.83 is: 92,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,188.54 : 316,836.48 = 61,428.83 : x
  2. Step 2: Convert to fraction form
    211,188.54/316,836.48 = 61,428.83/x
  3. Step 3: Cross multiply
    211,188.54x = 316,836.48 × 61,428.83
  4. Step 4: Simplify right side
    211,188.54x = 19,462,894,267.72
  5. Step 5: Solve for x
    x = 19,462,894,267.72/211,188.54
  6. Step 6: Final answer
    x = 92,158.86

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1.5x scale

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.