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Finding the Fourth Proportional to 118,578.80, 163,575 and 73,266.80

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Solution

The fourth proportional to 118,578.80, 163,575 and 73,266.80 is: 101,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,578.80 : 163,575 = 73,266.80 : x
  2. Step 2: Convert to fraction form
    118,578.80/163,575 = 73,266.80/x
  3. Step 3: Cross multiply
    118,578.80x = 163,575 × 73,266.80
  4. Step 4: Simplify right side
    118,578.80x = 11,984,616,810
  5. Step 5: Solve for x
    x = 11,984,616,810/118,578.80
  6. Step 6: Final answer
    x = 101,068.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.