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Finding the Fourth Proportional to 121,810.58, 168,102.06 and 68,101.64

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Solution

The fourth proportional to 121,810.58, 168,102.06 and 68,101.64 is: 93,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,810.58 : 168,102.06 = 68,101.64 : x
  2. Step 2: Convert to fraction form
    121,810.58/168,102.06 = 68,101.64/x
  3. Step 3: Cross multiply
    121,810.58x = 168,102.06 × 68,101.64
  4. Step 4: Simplify right side
    121,810.58x = 11,448,025,973.38
  5. Step 5: Solve for x
    x = 11,448,025,973.38/121,810.58
  6. Step 6: Final answer
    x = 93,982.20

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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.