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Finding the Fourth Proportional to 111,319.98, 153,615.87 and 61,009.26

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Solution

The fourth proportional to 111,319.98, 153,615.87 and 61,009.26 is: 84,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,319.98 : 153,615.87 = 61,009.26 : x
  2. Step 2: Convert to fraction form
    111,319.98/153,615.87 = 61,009.26/x
  3. Step 3: Cross multiply
    111,319.98x = 153,615.87 × 61,009.26
  4. Step 4: Simplify right side
    111,319.98x = 9,371,990,552.96
  5. Step 5: Solve for x
    x = 9,371,990,552.96/111,319.98
  6. Step 6: Final answer
    x = 84,189.65

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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.