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Finding the Fourth Proportional to 318,811.78, 439,953.58 and 175,573.00

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Solution

The fourth proportional to 318,811.78, 439,953.58 and 175,573.00 is: 242,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,811.78 : 439,953.58 = 175,573.00 : x
  2. Step 2: Convert to fraction form
    318,811.78/439,953.58 = 175,573.00/x
  3. Step 3: Cross multiply
    318,811.78x = 439,953.58 × 175,573.00
  4. Step 4: Simplify right side
    318,811.78x = 77,243,969,683.15
  5. Step 5: Solve for x
    x = 77,243,969,683.15/318,811.78
  6. Step 6: Final answer
    x = 242,287.06

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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.