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Finding the Fourth Proportional to 157,097.40, 235,386.90 and 133,769.40

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Solution

The fourth proportional to 157,097.40, 235,386.90 and 133,769.40 is: 200,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,097.40 : 235,386.90 = 133,769.40 : x
  2. Step 2: Convert to fraction form
    157,097.40/235,386.90 = 133,769.40/x
  3. Step 3: Cross multiply
    157,097.40x = 235,386.90 × 133,769.40
  4. Step 4: Simplify right side
    157,097.40x = 31,487,564,380.86
  5. Step 5: Solve for x
    x = 31,487,564,380.86/157,097.40
  6. Step 6: Final answer
    x = 200,433.39

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1.5x scale

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.