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Finding the Fourth Proportional to 115,671.90, 173,896.65 and 98,564.70

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Solution

The fourth proportional to 115,671.90, 173,896.65 and 98,564.70 is: 148,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,671.90 : 173,896.65 = 98,564.70 : x
  2. Step 2: Convert to fraction form
    115,671.90/173,896.65 = 98,564.70/x
  3. Step 3: Cross multiply
    115,671.90x = 173,896.65 × 98,564.70
  4. Step 4: Simplify right side
    115,671.90x = 17,140,071,138.26
  5. Step 5: Solve for x
    x = 17,140,071,138.26/115,671.90
  6. Step 6: Final answer
    x = 148,178.35

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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.