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Finding the Fourth Proportional to 118,051.20, 177,076.80 and 51,566.40

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Solution

The fourth proportional to 118,051.20, 177,076.80 and 51,566.40 is: 77,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,051.20 : 177,076.80 = 51,566.40 : x
  2. Step 2: Convert to fraction form
    118,051.20/177,076.80 = 51,566.40/x
  3. Step 3: Cross multiply
    118,051.20x = 177,076.80 × 51,566.40
  4. Step 4: Simplify right side
    118,051.20x = 9,131,213,099.52
  5. Step 5: Solve for x
    x = 9,131,213,099.52/118,051.20
  6. Step 6: Final answer
    x = 77,349.60

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1.5x scale

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.