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Finding the Fourth Proportional to 111,143.63, 153,378.20 and 60,842.63

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Solution

The fourth proportional to 111,143.63, 153,378.20 and 60,842.63 is: 83,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,143.63 : 153,378.20 = 60,842.63 : x
  2. Step 2: Convert to fraction form
    111,143.63/153,378.20 = 60,842.63/x
  3. Step 3: Cross multiply
    111,143.63x = 153,378.20 × 60,842.63
  4. Step 4: Simplify right side
    111,143.63x = 9,331,932,457.88
  5. Step 5: Solve for x
    x = 9,331,932,457.88/111,143.63
  6. Step 6: Final answer
    x = 83,962.82

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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.