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Finding the Fourth Proportional to 77,998.55, 116,998.02 and 25,412.13

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Solution

The fourth proportional to 77,998.55, 116,998.02 and 25,412.13 is: 38,118.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,998.55 : 116,998.02 = 25,412.13 : x
  2. Step 2: Convert to fraction form
    77,998.55/116,998.02 = 25,412.13/x
  3. Step 3: Cross multiply
    77,998.55x = 116,998.02 × 25,412.13
  4. Step 4: Simplify right side
    77,998.55x = 2,973,168,893.98
  5. Step 5: Solve for x
    x = 2,973,168,893.98/77,998.55
  6. Step 6: Final answer
    x = 38,118.26

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1.5x scale

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.