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Finding the Fourth Proportional to 111,297.65, 153,585.32 and 62,900.55

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Solution

The fourth proportional to 111,297.65, 153,585.32 and 62,900.55 is: 86,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,297.65 : 153,585.32 = 62,900.55 : x
  2. Step 2: Convert to fraction form
    111,297.65/153,585.32 = 62,900.55/x
  3. Step 3: Cross multiply
    111,297.65x = 153,585.32 × 62,900.55
  4. Step 4: Simplify right side
    111,297.65x = 9,660,600,785.42
  5. Step 5: Solve for x
    x = 9,660,600,785.42/111,297.65
  6. Step 6: Final answer
    x = 86,799.69

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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.