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Finding the Fourth Proportional to 292,539, 438,808.56 and 70,923

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Solution

The fourth proportional to 292,539, 438,808.56 and 70,923 is: 106,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,539 : 438,808.56 = 70,923 : x
  2. Step 2: Convert to fraction form
    292,539/438,808.56 = 70,923/x
  3. Step 3: Cross multiply
    292,539x = 438,808.56 × 70,923
  4. Step 4: Simplify right side
    292,539x = 31,121,619,500.88
  5. Step 5: Solve for x
    x = 31,121,619,500.88/292,539
  6. Step 6: Final answer
    x = 106,384.51

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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.