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Finding the Fourth Proportional to 111,762.50, 154,222.89 and 65,814.83

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Solution

The fourth proportional to 111,762.50, 154,222.89 and 65,814.83 is: 90,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,762.50 : 154,222.89 = 65,814.83 : x
  2. Step 2: Convert to fraction form
    111,762.50/154,222.89 = 65,814.83/x
  3. Step 3: Cross multiply
    111,762.50x = 154,222.89 × 65,814.83
  4. Step 4: Simplify right side
    111,762.50x = 10,150,153,287.46
  5. Step 5: Solve for x
    x = 10,150,153,287.46/111,762.50
  6. Step 6: Final answer
    x = 90,818.95

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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.