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Finding the Fourth Proportional to 211,312.33, 316,940.74 and 104,654.77

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Solution

The fourth proportional to 211,312.33, 316,940.74 and 104,654.77 is: 156,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,312.33 : 316,940.74 = 104,654.77 : x
  2. Step 2: Convert to fraction form
    211,312.33/316,940.74 = 104,654.77/x
  3. Step 3: Cross multiply
    211,312.33x = 316,940.74 × 104,654.77
  4. Step 4: Simplify right side
    211,312.33x = 33,169,360,248.33
  5. Step 5: Solve for x
    x = 33,169,360,248.33/211,312.33
  6. Step 6: Final answer
    x = 156,968.41

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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.