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Finding the Fourth Proportional to 66,322.94, 99,421.87 and 33,011.51

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Solution

The fourth proportional to 66,322.94, 99,421.87 and 33,011.51 is: 49,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,322.94 : 99,421.87 = 33,011.51 : x
  2. Step 2: Convert to fraction form
    66,322.94/99,421.87 = 33,011.51/x
  3. Step 3: Cross multiply
    66,322.94x = 99,421.87 × 33,011.51
  4. Step 4: Simplify right side
    66,322.94x = 3,282,065,973.19
  5. Step 5: Solve for x
    x = 3,282,065,973.19/66,322.94
  6. Step 6: Final answer
    x = 49,486.14

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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.