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Finding the Fourth Proportional to 114,752.40, 172,128.60 and 107,316.60

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Solution

The fourth proportional to 114,752.40, 172,128.60 and 107,316.60 is: 160,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,752.40 : 172,128.60 = 107,316.60 : x
  2. Step 2: Convert to fraction form
    114,752.40/172,128.60 = 107,316.60/x
  3. Step 3: Cross multiply
    114,752.40x = 172,128.60 × 107,316.60
  4. Step 4: Simplify right side
    114,752.40x = 18,472,256,114.76
  5. Step 5: Solve for x
    x = 18,472,256,114.76/114,752.40
  6. Step 6: Final answer
    x = 160,974.90

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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.