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Finding the Fourth Proportional to 91,097.60, 125,714.90 and 50,813.97

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Solution

The fourth proportional to 91,097.60, 125,714.90 and 50,813.97 is: 70,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,097.60 : 125,714.90 = 50,813.97 : x
  2. Step 2: Convert to fraction form
    91,097.60/125,714.90 = 50,813.97/x
  3. Step 3: Cross multiply
    91,097.60x = 125,714.90 × 50,813.97
  4. Step 4: Simplify right side
    91,097.60x = 6,388,072,812.76
  5. Step 5: Solve for x
    x = 6,388,072,812.76/91,097.60
  6. Step 6: Final answer
    x = 70,123.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.