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Finding the Fourth Proportional to 61,072.18, 91,472.93 and 46,928.09

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Solution

The fourth proportional to 61,072.18, 91,472.93 and 46,928.09 is: 70,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,072.18 : 91,472.93 = 46,928.09 : x
  2. Step 2: Convert to fraction form
    61,072.18/91,472.93 = 46,928.09/x
  3. Step 3: Cross multiply
    61,072.18x = 91,472.93 × 46,928.09
  4. Step 4: Simplify right side
    61,072.18x = 4,292,650,061.63
  5. Step 5: Solve for x
    x = 4,292,650,061.63/61,072.18
  6. Step 6: Final answer
    x = 70,288.14

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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.