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Finding the Fourth Proportional to 164,555.13, 246,783.78 and 69,783.90

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Solution

The fourth proportional to 164,555.13, 246,783.78 and 69,783.90 is: 104,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,555.13 : 246,783.78 = 69,783.90 : x
  2. Step 2: Convert to fraction form
    164,555.13/246,783.78 = 69,783.90/x
  3. Step 3: Cross multiply
    164,555.13x = 246,783.78 × 69,783.90
  4. Step 4: Simplify right side
    164,555.13x = 17,221,534,625.14
  5. Step 5: Solve for x
    x = 17,221,534,625.14/164,555.13
  6. Step 6: Final answer
    x = 104,655.11

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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.