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Finding the Fourth Proportional to 157,174.52, 216,905.73 and 85,559.32

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Solution

The fourth proportional to 157,174.52, 216,905.73 and 85,559.32 is: 118,074.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,174.52 : 216,905.73 = 85,559.32 : x
  2. Step 2: Convert to fraction form
    157,174.52/216,905.73 = 85,559.32/x
  3. Step 3: Cross multiply
    157,174.52x = 216,905.73 × 85,559.32
  4. Step 4: Simplify right side
    157,174.52x = 18,558,305,678.38
  5. Step 5: Solve for x
    x = 18,558,305,678.38/157,174.52
  6. Step 6: Final answer
    x = 118,074.52

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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.