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Finding the Fourth Proportional to 66,468.63, 91,674.84 and 42,597.51

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Solution

The fourth proportional to 66,468.63, 91,674.84 and 42,597.51 is: 58,751.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,468.63 : 91,674.84 = 42,597.51 : x
  2. Step 2: Convert to fraction form
    66,468.63/91,674.84 = 42,597.51/x
  3. Step 3: Cross multiply
    66,468.63x = 91,674.84 × 42,597.51
  4. Step 4: Simplify right side
    66,468.63x = 3,905,119,913.65
  5. Step 5: Solve for x
    x = 3,905,119,913.65/66,468.63
  6. Step 6: Final answer
    x = 58,751.32

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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.