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Finding the Fourth Proportional to 91,292.60, 136,938.90 and 41,353.40

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Solution

The fourth proportional to 91,292.60, 136,938.90 and 41,353.40 is: 62,030.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,292.60 : 136,938.90 = 41,353.40 : x
  2. Step 2: Convert to fraction form
    91,292.60/136,938.90 = 41,353.40/x
  3. Step 3: Cross multiply
    91,292.60x = 136,938.90 × 41,353.40
  4. Step 4: Simplify right side
    91,292.60x = 5,662,889,107.26
  5. Step 5: Solve for x
    x = 5,662,889,107.26/91,292.60
  6. Step 6: Final answer
    x = 62,030.10

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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.