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Finding the Fourth Proportional to 111,735.95, 154,195.59 and 61,434.95

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Solution

The fourth proportional to 111,735.95, 154,195.59 and 61,434.95 is: 84,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,735.95 : 154,195.59 = 61,434.95 : x
  2. Step 2: Convert to fraction form
    111,735.95/154,195.59 = 61,434.95/x
  3. Step 3: Cross multiply
    111,735.95x = 154,195.59 × 61,434.95
  4. Step 4: Simplify right side
    111,735.95x = 9,472,997,590.89
  5. Step 5: Solve for x
    x = 9,472,997,590.89/111,735.95
  6. Step 6: Final answer
    x = 84,780.22

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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.