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Finding the Fourth Proportional to 262,477.94, 393,779.62 and 84,985.14

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Solution

The fourth proportional to 262,477.94, 393,779.62 and 84,985.14 is: 127,498.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,477.94 : 393,779.62 = 84,985.14 : x
  2. Step 2: Convert to fraction form
    262,477.94/393,779.62 = 84,985.14/x
  3. Step 3: Cross multiply
    262,477.94x = 393,779.62 × 84,985.14
  4. Step 4: Simplify right side
    262,477.94x = 33,465,416,134.85
  5. Step 5: Solve for x
    x = 33,465,416,134.85/262,477.94
  6. Step 6: Final answer
    x = 127,498.01

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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.