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Finding the Fourth Proportional to 111,141.51, 153,376.50 and 63,397.68

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Solution

The fourth proportional to 111,141.51, 153,376.50 and 63,397.68 is: 87,489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,141.51 : 153,376.50 = 63,397.68 : x
  2. Step 2: Convert to fraction form
    111,141.51/153,376.50 = 63,397.68/x
  3. Step 3: Cross multiply
    111,141.51x = 153,376.50 × 63,397.68
  4. Step 4: Simplify right side
    111,141.51x = 9,723,714,266.52
  5. Step 5: Solve for x
    x = 9,723,714,266.52/111,141.51
  6. Step 6: Final answer
    x = 87,489.49

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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.