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Finding the Fourth Proportional to 111,907.49, 154,423.19 and 61,606.49

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Solution

The fourth proportional to 111,907.49, 154,423.19 and 61,606.49 is: 85,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,907.49 : 154,423.19 = 61,606.49 : x
  2. Step 2: Convert to fraction form
    111,907.49/154,423.19 = 61,606.49/x
  3. Step 3: Cross multiply
    111,907.49x = 154,423.19 × 61,606.49
  4. Step 4: Simplify right side
    111,907.49x = 9,513,470,092.40
  5. Step 5: Solve for x
    x = 9,513,470,092.40/111,907.49
  6. Step 6: Final answer
    x = 85,011.92

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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.