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Finding the Fourth Proportional to 66,235.12, 91,404.05 and 36,019.89

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Solution

The fourth proportional to 66,235.12, 91,404.05 and 36,019.89 is: 49,707.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,235.12 : 91,404.05 = 36,019.89 : x
  2. Step 2: Convert to fraction form
    66,235.12/91,404.05 = 36,019.89/x
  3. Step 3: Cross multiply
    66,235.12x = 91,404.05 × 36,019.89
  4. Step 4: Simplify right side
    66,235.12x = 3,292,363,646.46
  5. Step 5: Solve for x
    x = 3,292,363,646.46/66,235.12
  6. Step 6: Final answer
    x = 49,707.22

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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.