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Finding the Fourth Proportional to 121,482.86, 167,650.51 and 70,491.74

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Solution

The fourth proportional to 121,482.86, 167,650.51 and 70,491.74 is: 97,281.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,482.86 : 167,650.51 = 70,491.74 : x
  2. Step 2: Convert to fraction form
    121,482.86/167,650.51 = 70,491.74/x
  3. Step 3: Cross multiply
    121,482.86x = 167,650.51 × 70,491.74
  4. Step 4: Simplify right side
    121,482.86x = 11,817,976,161.79
  5. Step 5: Solve for x
    x = 11,817,976,161.79/121,482.86
  6. Step 6: Final answer
    x = 97,281.02

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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.