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Finding the Fourth Proportional to 115,991.70, 173,938.34 and 41,130.70

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Solution

The fourth proportional to 115,991.70, 173,938.34 and 41,130.70 is: 61,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,991.70 : 173,938.34 = 41,130.70 : x
  2. Step 2: Convert to fraction form
    115,991.70/173,938.34 = 41,130.70/x
  3. Step 3: Cross multiply
    115,991.70x = 173,938.34 × 41,130.70
  4. Step 4: Simplify right side
    115,991.70x = 7,154,205,681.04
  5. Step 5: Solve for x
    x = 7,154,205,681.04/115,991.70
  6. Step 6: Final answer
    x = 61,678.60

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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.