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Finding the Fourth Proportional to 78,633.20, 108,522.78 and 46,802.20

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Solution

The fourth proportional to 78,633.20, 108,522.78 and 46,802.20 is: 64,592.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633.20 : 108,522.78 = 46,802.20 : x
  2. Step 2: Convert to fraction form
    78,633.20/108,522.78 = 46,802.20/x
  3. Step 3: Cross multiply
    78,633.20x = 108,522.78 × 46,802.20
  4. Step 4: Simplify right side
    78,633.20x = 5,079,104,854.12
  5. Step 5: Solve for x
    x = 5,079,104,854.12/78,633.20
  6. Step 6: Final answer
    x = 64,592.37

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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.