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Finding the Fourth Proportional to 118,445.78, 177,717.88 and 51,851.64

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Solution

The fourth proportional to 118,445.78, 177,717.88 and 51,851.64 is: 77,799.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,445.78 : 177,717.88 = 51,851.64 : x
  2. Step 2: Convert to fraction form
    118,445.78/177,717.88 = 51,851.64/x
  3. Step 3: Cross multiply
    118,445.78x = 177,717.88 × 51,851.64
  4. Step 4: Simplify right side
    118,445.78x = 9,214,963,535.32
  5. Step 5: Solve for x
    x = 9,214,963,535.32/118,445.78
  6. Step 6: Final answer
    x = 77,799.00

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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.