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Finding the Fourth Proportional to 316,641.65, 474,987.08 and 92,005.31

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Solution

The fourth proportional to 316,641.65, 474,987.08 and 92,005.31 is: 138,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,641.65 : 474,987.08 = 92,005.31 : x
  2. Step 2: Convert to fraction form
    316,641.65/474,987.08 = 92,005.31/x
  3. Step 3: Cross multiply
    316,641.65x = 474,987.08 × 92,005.31
  4. Step 4: Simplify right side
    316,641.65x = 43,701,333,541.39
  5. Step 5: Solve for x
    x = 43,701,333,541.39/316,641.65
  6. Step 6: Final answer
    x = 138,015.11

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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.