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Finding the Fourth Proportional to 118,075.20, 177,112.80 and 48,004.80

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Solution

The fourth proportional to 118,075.20, 177,112.80 and 48,004.80 is: 72,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,075.20 : 177,112.80 = 48,004.80 : x
  2. Step 2: Convert to fraction form
    118,075.20/177,112.80 = 48,004.80/x
  3. Step 3: Cross multiply
    118,075.20x = 177,112.80 × 48,004.80
  4. Step 4: Simplify right side
    118,075.20x = 8,502,264,541.44
  5. Step 5: Solve for x
    x = 8,502,264,541.44/118,075.20
  6. Step 6: Final answer
    x = 72,007.20

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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.