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Finding the Fourth Proportional to 85,456.80, 117,928.08 and 46,693.08

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Solution

The fourth proportional to 85,456.80, 117,928.08 and 46,693.08 is: 64,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,456.80 : 117,928.08 = 46,693.08 : x
  2. Step 2: Convert to fraction form
    85,456.80/117,928.08 = 46,693.08/x
  3. Step 3: Cross multiply
    85,456.80x = 117,928.08 × 46,693.08
  4. Step 4: Simplify right side
    85,456.80x = 5,506,425,273.69
  5. Step 5: Solve for x
    x = 5,506,425,273.69/85,456.80
  6. Step 6: Final answer
    x = 64,435.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.