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Finding the Fourth Proportional to 111,856.84, 154,362.35 and 61,555.84

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Solution

The fourth proportional to 111,856.84, 154,362.35 and 61,555.84 is: 84,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.84 : 154,362.35 = 61,555.84 : x
  2. Step 2: Convert to fraction form
    111,856.84/154,362.35 = 61,555.84/x
  3. Step 3: Cross multiply
    111,856.84x = 154,362.35 × 61,555.84
  4. Step 4: Simplify right side
    111,856.84x = 9,501,904,118.62
  5. Step 5: Solve for x
    x = 9,501,904,118.62/111,856.84
  6. Step 6: Final answer
    x = 84,947.01

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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.