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Finding the Fourth Proportional to 107,760.70, 148,668.87 and 65,303.74

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Solution

The fourth proportional to 107,760.70, 148,668.87 and 65,303.74 is: 90,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,760.70 : 148,668.87 = 65,303.74 : x
  2. Step 2: Convert to fraction form
    107,760.70/148,668.87 = 65,303.74/x
  3. Step 3: Cross multiply
    107,760.70x = 148,668.87 × 65,303.74
  4. Step 4: Simplify right side
    107,760.70x = 9,708,633,232.57
  5. Step 5: Solve for x
    x = 9,708,633,232.57/107,760.70
  6. Step 6: Final answer
    x = 90,094.38

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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.