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Finding the Fourth Proportional to 93,167.80, 128,326.62 and 71,616.28

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Solution

The fourth proportional to 93,167.80, 128,326.62 and 71,616.28 is: 98,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,167.80 : 128,326.62 = 71,616.28 : x
  2. Step 2: Convert to fraction form
    93,167.80/128,326.62 = 71,616.28/x
  3. Step 3: Cross multiply
    93,167.80x = 128,326.62 × 71,616.28
  4. Step 4: Simplify right side
    93,167.80x = 9,190,275,149.37
  5. Step 5: Solve for x
    x = 9,190,275,149.37/93,167.80
  6. Step 6: Final answer
    x = 98,642.18

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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.