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Finding the Fourth Proportional to 111,859.34, 154,365.80 and 61,558.34

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Solution

The fourth proportional to 111,859.34, 154,365.80 and 61,558.34 is: 84,950.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,859.34 : 154,365.80 = 61,558.34 : x
  2. Step 2: Convert to fraction form
    111,859.34/154,365.80 = 61,558.34/x
  3. Step 3: Cross multiply
    111,859.34x = 154,365.80 × 61,558.34
  4. Step 4: Simplify right side
    111,859.34x = 9,502,502,400.77
  5. Step 5: Solve for x
    x = 9,502,502,400.77/111,859.34
  6. Step 6: Final answer
    x = 84,950.46

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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.