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Finding the Fourth Proportional to 157,491.35, 217,356.51 and 89,518.54

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Solution

The fourth proportional to 157,491.35, 217,356.51 and 89,518.54 is: 123,546.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,491.35 : 217,356.51 = 89,518.54 : x
  2. Step 2: Convert to fraction form
    157,491.35/217,356.51 = 89,518.54/x
  3. Step 3: Cross multiply
    157,491.35x = 217,356.51 × 89,518.54
  4. Step 4: Simplify right side
    157,491.35x = 19,457,437,434.70
  5. Step 5: Solve for x
    x = 19,457,437,434.70/157,491.35
  6. Step 6: Final answer
    x = 123,546.07

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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.