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Finding the Fourth Proportional to 78,419.74, 108,228.51 and 46,588.75

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Solution

The fourth proportional to 78,419.74, 108,228.51 and 46,588.75 is: 64,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,419.74 : 108,228.51 = 46,588.75 : x
  2. Step 2: Convert to fraction form
    78,419.74/108,228.51 = 46,588.75/x
  3. Step 3: Cross multiply
    78,419.74x = 108,228.51 × 46,588.75
  4. Step 4: Simplify right side
    78,419.74x = 5,042,230,995.26
  5. Step 5: Solve for x
    x = 5,042,230,995.26/78,419.74
  6. Step 6: Final answer
    x = 64,297.98

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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.