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Finding the Fourth Proportional to 91,144.58, 136,673.12 and 46,748.48

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Solution

The fourth proportional to 91,144.58, 136,673.12 and 46,748.48 is: 70,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,144.58 : 136,673.12 = 46,748.48 : x
  2. Step 2: Convert to fraction form
    91,144.58/136,673.12 = 46,748.48/x
  3. Step 3: Cross multiply
    91,144.58x = 136,673.12 × 46,748.48
  4. Step 4: Simplify right side
    91,144.58x = 6,389,260,050.36
  5. Step 5: Solve for x
    x = 6,389,260,050.36/91,144.58
  6. Step 6: Final answer
    x = 70,100.28

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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.