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Finding the Fourth Proportional to 136,597.50, 188,623.51 and 85,697.73

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Solution

The fourth proportional to 136,597.50, 188,623.51 and 85,697.73 is: 118,337.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,597.50 : 188,623.51 = 85,697.73 : x
  2. Step 2: Convert to fraction form
    136,597.50/188,623.51 = 85,697.73/x
  3. Step 3: Cross multiply
    136,597.50x = 188,623.51 × 85,697.73
  4. Step 4: Simplify right side
    136,597.50x = 16,164,606,417.39
  5. Step 5: Solve for x
    x = 16,164,606,417.39/136,597.50
  6. Step 6: Final answer
    x = 118,337.50

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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.