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Finding the Fourth Proportional to 139,153.77, 191,961.77 and 88,080.84

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Solution

The fourth proportional to 139,153.77, 191,961.77 and 88,080.84 is: 121,506.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,153.77 : 191,961.77 = 88,080.84 : x
  2. Step 2: Convert to fraction form
    139,153.77/191,961.77 = 88,080.84/x
  3. Step 3: Cross multiply
    139,153.77x = 191,961.77 × 88,080.84
  4. Step 4: Simplify right side
    139,153.77x = 16,908,153,509.08
  5. Step 5: Solve for x
    x = 16,908,153,509.08/139,153.77
  6. Step 6: Final answer
    x = 121,506.97

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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.