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Finding the Fourth Proportional to 111,461.30, 153,816.59 and 63,715.71

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Solution

The fourth proportional to 111,461.30, 153,816.59 and 63,715.71 is: 87,927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,461.30 : 153,816.59 = 63,715.71 : x
  2. Step 2: Convert to fraction form
    111,461.30/153,816.59 = 63,715.71/x
  3. Step 3: Cross multiply
    111,461.30x = 153,816.59 × 63,715.71
  4. Step 4: Simplify right side
    111,461.30x = 9,800,532,923.05
  5. Step 5: Solve for x
    x = 9,800,532,923.05/111,461.30
  6. Step 6: Final answer
    x = 87,927.68

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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.