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Finding the Fourth Proportional to 78,508.80, 108,303.99 and 46,655.14

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Solution

The fourth proportional to 78,508.80, 108,303.99 and 46,655.14 is: 64,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,508.80 : 108,303.99 = 46,655.14 : x
  2. Step 2: Convert to fraction form
    78,508.80/108,303.99 = 46,655.14/x
  3. Step 3: Cross multiply
    78,508.80x = 108,303.99 × 46,655.14
  4. Step 4: Simplify right side
    78,508.80x = 5,052,937,816.01
  5. Step 5: Solve for x
    x = 5,052,937,816.01/78,508.80
  6. Step 6: Final answer
    x = 64,361.42

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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.