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Finding the Fourth Proportional to 121,503.76, 167,584.64 and 89,228.24

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Solution

The fourth proportional to 121,503.76, 167,584.64 and 89,228.24 is: 123,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,503.76 : 167,584.64 = 89,228.24 : x
  2. Step 2: Convert to fraction form
    121,503.76/167,584.64 = 89,228.24/x
  3. Step 3: Cross multiply
    121,503.76x = 167,584.64 × 89,228.24
  4. Step 4: Simplify right side
    121,503.76x = 14,953,282,478.23
  5. Step 5: Solve for x
    x = 14,953,282,478.23/121,503.76
  6. Step 6: Final answer
    x = 123,068.48

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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.