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Finding the Fourth Proportional to 104,424, 144,113.76 and 59,720.64

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Solution

The fourth proportional to 104,424, 144,113.76 and 59,720.64 is: 82,419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,424 : 144,113.76 = 59,720.64 : x
  2. Step 2: Convert to fraction form
    104,424/144,113.76 = 59,720.64/x
  3. Step 3: Cross multiply
    104,424x = 144,113.76 × 59,720.64
  4. Step 4: Simplify right side
    104,424x = 8,606,565,980.01
  5. Step 5: Solve for x
    x = 8,606,565,980.01/104,424
  6. Step 6: Final answer
    x = 82,419.42

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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.