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Finding the Fourth Proportional to 136,697.77, 188,761.59 and 85,798.72

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Solution

The fourth proportional to 136,697.77, 188,761.59 and 85,798.72 is: 118,476.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,697.77 : 188,761.59 = 85,798.72 : x
  2. Step 2: Convert to fraction form
    136,697.77/188,761.59 = 85,798.72/x
  3. Step 3: Cross multiply
    136,697.77x = 188,761.59 × 85,798.72
  4. Step 4: Simplify right side
    136,697.77x = 16,195,502,807.16
  5. Step 5: Solve for x
    x = 16,195,502,807.16/136,697.77
  6. Step 6: Final answer
    x = 118,476.72

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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.