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Finding the Fourth Proportional to 121,699.99, 167,934.66 and 70,712.18

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Solution

The fourth proportional to 121,699.99, 167,934.66 and 70,712.18 is: 97,576.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,699.99 : 167,934.66 = 70,712.18 : x
  2. Step 2: Convert to fraction form
    121,699.99/167,934.66 = 70,712.18/x
  3. Step 3: Cross multiply
    121,699.99x = 167,934.66 × 70,712.18
  4. Step 4: Simplify right side
    121,699.99x = 11,875,025,906.16
  5. Step 5: Solve for x
    x = 11,875,025,906.16/121,699.99
  6. Step 6: Final answer
    x = 97,576.23

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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.