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Finding the Fourth Proportional to 111,856.83, 154,362.45 and 61,555.83

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Solution

The fourth proportional to 111,856.83, 154,362.45 and 61,555.83 is: 84,947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.83 : 154,362.45 = 61,555.83 : x
  2. Step 2: Convert to fraction form
    111,856.83/154,362.45 = 61,555.83/x
  3. Step 3: Cross multiply
    111,856.83x = 154,362.45 × 61,555.83
  4. Step 4: Simplify right side
    111,856.83x = 9,501,908,730.58
  5. Step 5: Solve for x
    x = 9,501,908,730.58/111,856.83
  6. Step 6: Final answer
    x = 84,947.06

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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.