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Finding the Fourth Proportional to 116,865.40, 175,038.90 and 90,484.60

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Solution

The fourth proportional to 116,865.40, 175,038.90 and 90,484.60 is: 135,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,865.40 : 175,038.90 = 90,484.60 : x
  2. Step 2: Convert to fraction form
    116,865.40/175,038.90 = 90,484.60/x
  3. Step 3: Cross multiply
    116,865.40x = 175,038.90 × 90,484.60
  4. Step 4: Simplify right side
    116,865.40x = 15,838,324,850.94
  5. Step 5: Solve for x
    x = 15,838,324,850.94/116,865.40
  6. Step 6: Final answer
    x = 135,526.21

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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.