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Finding the Fourth Proportional to 111,537.14, 153,897.98 and 66,208.74

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Solution

The fourth proportional to 111,537.14, 153,897.98 and 66,208.74 is: 91,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,537.14 : 153,897.98 = 66,208.74 : x
  2. Step 2: Convert to fraction form
    111,537.14/153,897.98 = 66,208.74/x
  3. Step 3: Cross multiply
    111,537.14x = 153,897.98 × 66,208.74
  4. Step 4: Simplify right side
    111,537.14x = 10,189,391,344.35
  5. Step 5: Solve for x
    x = 10,189,391,344.35/111,537.14
  6. Step 6: Final answer
    x = 91,354.25

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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.