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Finding the Fourth Proportional to 111,898.84, 154,423.63 and 60,914.87

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Solution

The fourth proportional to 111,898.84, 154,423.63 and 60,914.87 is: 84,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,898.84 : 154,423.63 = 60,914.87 : x
  2. Step 2: Convert to fraction form
    111,898.84/154,423.63 = 60,914.87/x
  3. Step 3: Cross multiply
    111,898.84x = 154,423.63 × 60,914.87
  4. Step 4: Simplify right side
    111,898.84x = 9,406,695,041.80
  5. Step 5: Solve for x
    x = 9,406,695,041.80/111,898.84
  6. Step 6: Final answer
    x = 84,064.28

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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.