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Finding the Fourth Proportional to 66,030.86, 91,116.87 and 38,804.06

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Solution

The fourth proportional to 66,030.86, 91,116.87 and 38,804.06 is: 53,546.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,030.86 : 91,116.87 = 38,804.06 : x
  2. Step 2: Convert to fraction form
    66,030.86/91,116.87 = 38,804.06/x
  3. Step 3: Cross multiply
    66,030.86x = 91,116.87 × 38,804.06
  4. Step 4: Simplify right side
    66,030.86x = 3,535,704,490.49
  5. Step 5: Solve for x
    x = 3,535,704,490.49/66,030.86
  6. Step 6: Final answer
    x = 53,546.24

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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.