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Finding the Fourth Proportional to 114,618.28, 171,929.54 and 39,740.86

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Solution

The fourth proportional to 114,618.28, 171,929.54 and 39,740.86 is: 59,612.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,618.28 : 171,929.54 = 39,740.86 : x
  2. Step 2: Convert to fraction form
    114,618.28/171,929.54 = 39,740.86/x
  3. Step 3: Cross multiply
    114,618.28x = 171,929.54 × 39,740.86
  4. Step 4: Simplify right side
    114,618.28x = 6,832,627,779.00
  5. Step 5: Solve for x
    x = 6,832,627,779.00/114,618.28
  6. Step 6: Final answer
    x = 59,612.03

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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.