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Finding the Fourth Proportional to 157,628.16, 217,524.96 and 90,560.16

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Solution

The fourth proportional to 157,628.16, 217,524.96 and 90,560.16 is: 124,971.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,628.16 : 217,524.96 = 90,560.16 : x
  2. Step 2: Convert to fraction form
    157,628.16/217,524.96 = 90,560.16/x
  3. Step 3: Cross multiply
    157,628.16x = 217,524.96 × 90,560.16
  4. Step 4: Simplify right side
    157,628.16x = 19,699,095,181.59
  5. Step 5: Solve for x
    x = 19,699,095,181.59/157,628.16
  6. Step 6: Final answer
    x = 124,971.93

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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.