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Finding the Fourth Proportional to 121,312.51, 167,416.41 and 67,597.57

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Solution

The fourth proportional to 121,312.51, 167,416.41 and 67,597.57 is: 93,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,312.51 : 167,416.41 = 67,597.57 : x
  2. Step 2: Convert to fraction form
    121,312.51/167,416.41 = 67,597.57/x
  3. Step 3: Cross multiply
    121,312.51x = 167,416.41 × 67,597.57
  4. Step 4: Simplify right side
    121,312.51x = 11,316,942,494.12
  5. Step 5: Solve for x
    x = 11,316,942,494.12/121,312.51
  6. Step 6: Final answer
    x = 93,287.51

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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.