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Finding the Fourth Proportional to 91,394.64, 136,897.56 and 53,914.32

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Solution

The fourth proportional to 91,394.64, 136,897.56 and 53,914.32 is: 80,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,394.64 : 136,897.56 = 53,914.32 : x
  2. Step 2: Convert to fraction form
    91,394.64/136,897.56 = 53,914.32/x
  3. Step 3: Cross multiply
    91,394.64x = 136,897.56 × 53,914.32
  4. Step 4: Simplify right side
    91,394.64x = 7,380,738,857.06
  5. Step 5: Solve for x
    x = 7,380,738,857.06/91,394.64
  6. Step 6: Final answer
    x = 80,756.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.