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Finding the Fourth Proportional to 151,636.76, 209,191.08 and 87,937.66

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Solution

The fourth proportional to 151,636.76, 209,191.08 and 87,937.66 is: 121,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,636.76 : 209,191.08 = 87,937.66 : x
  2. Step 2: Convert to fraction form
    151,636.76/209,191.08 = 87,937.66/x
  3. Step 3: Cross multiply
    151,636.76x = 209,191.08 × 87,937.66
  4. Step 4: Simplify right side
    151,636.76x = 18,395,774,068.07
  5. Step 5: Solve for x
    x = 18,395,774,068.07/151,636.76
  6. Step 6: Final answer
    x = 121,314.74

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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.