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Finding the Fourth Proportional to 115,866.10, 173,669.55 and 65,970.10

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Solution

The fourth proportional to 115,866.10, 173,669.55 and 65,970.10 is: 98,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,866.10 : 173,669.55 = 65,970.10 : x
  2. Step 2: Convert to fraction form
    115,866.10/173,669.55 = 65,970.10/x
  3. Step 3: Cross multiply
    115,866.10x = 173,669.55 × 65,970.10
  4. Step 4: Simplify right side
    115,866.10x = 11,456,997,580.46
  5. Step 5: Solve for x
    x = 11,456,997,580.46/115,866.10
  6. Step 6: Final answer
    x = 98,881.36

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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.