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Finding the Fourth Proportional to 121,082.88, 167,114.40 and 70,772.16

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Solution

The fourth proportional to 121,082.88, 167,114.40 and 70,772.16 is: 97,677.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,082.88 : 167,114.40 = 70,772.16 : x
  2. Step 2: Convert to fraction form
    121,082.88/167,114.40 = 70,772.16/x
  3. Step 3: Cross multiply
    121,082.88x = 167,114.40 × 70,772.16
  4. Step 4: Simplify right side
    121,082.88x = 11,827,047,055.10
  5. Step 5: Solve for x
    x = 11,827,047,055.10/121,082.88
  6. Step 6: Final answer
    x = 97,677.29

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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.