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Finding the Fourth Proportional to 317,795.82, 476,693.73 and 81,130.02

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Solution

The fourth proportional to 317,795.82, 476,693.73 and 81,130.02 is: 121,695.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,795.82 : 476,693.73 = 81,130.02 : x
  2. Step 2: Convert to fraction form
    317,795.82/476,693.73 = 81,130.02/x
  3. Step 3: Cross multiply
    317,795.82x = 476,693.73 × 81,130.02
  4. Step 4: Simplify right side
    317,795.82x = 38,674,171,848.77
  5. Step 5: Solve for x
    x = 38,674,171,848.77/317,795.82
  6. Step 6: Final answer
    x = 121,695.03

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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.