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Finding the Fourth Proportional to 121,461.02, 167,616.43 and 67,749.51

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Solution

The fourth proportional to 121,461.02, 167,616.43 and 67,749.51 is: 93,494.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,461.02 : 167,616.43 = 67,749.51 : x
  2. Step 2: Convert to fraction form
    121,461.02/167,616.43 = 67,749.51/x
  3. Step 3: Cross multiply
    121,461.02x = 167,616.43 × 67,749.51
  4. Step 4: Simplify right side
    121,461.02x = 11,355,931,000.45
  5. Step 5: Solve for x
    x = 11,355,931,000.45/121,461.02
  6. Step 6: Final answer
    x = 93,494.45

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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.