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Finding the Fourth Proportional to 121,518.22, 167,710.29 and 70,520.01

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Solution

The fourth proportional to 121,518.22, 167,710.29 and 70,520.01 is: 97,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,518.22 : 167,710.29 = 70,520.01 : x
  2. Step 2: Convert to fraction form
    121,518.22/167,710.29 = 70,520.01/x
  3. Step 3: Cross multiply
    121,518.22x = 167,710.29 × 70,520.01
  4. Step 4: Simplify right side
    121,518.22x = 11,826,931,327.90
  5. Step 5: Solve for x
    x = 11,826,931,327.90/121,518.22
  6. Step 6: Final answer
    x = 97,326.40

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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.