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Finding the Fourth Proportional to 66,035.66, 91,128.91 and 35,821.00

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Solution

The fourth proportional to 66,035.66, 91,128.91 and 35,821.00 is: 49,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,035.66 : 91,128.91 = 35,821.00 : x
  2. Step 2: Convert to fraction form
    66,035.66/91,128.91 = 35,821.00/x
  3. Step 3: Cross multiply
    66,035.66x = 91,128.91 × 35,821.00
  4. Step 4: Simplify right side
    66,035.66x = 3,264,328,050.36
  5. Step 5: Solve for x
    x = 3,264,328,050.36/66,035.66
  6. Step 6: Final answer
    x = 49,432.81

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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.