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Finding the Fourth Proportional to 111,457.30, 153,811.06 and 63,711.67

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Solution

The fourth proportional to 111,457.30, 153,811.06 and 63,711.67 is: 87,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,457.30 : 153,811.06 = 63,711.67 : x
  2. Step 2: Convert to fraction form
    111,457.30/153,811.06 = 63,711.67/x
  3. Step 3: Cross multiply
    111,457.30x = 153,811.06 × 63,711.67
  4. Step 4: Simplify right side
    111,457.30x = 9,799,559,497.07
  5. Step 5: Solve for x
    x = 9,799,559,497.07/111,457.30
  6. Step 6: Final answer
    x = 87,922.10

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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.