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Finding the Fourth Proportional to 171,543.11, 257,339.43 and 64,898.15

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Solution

The fourth proportional to 171,543.11, 257,339.43 and 64,898.15 is: 97,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,543.11 : 257,339.43 = 64,898.15 : x
  2. Step 2: Convert to fraction form
    171,543.11/257,339.43 = 64,898.15/x
  3. Step 3: Cross multiply
    171,543.11x = 257,339.43 × 64,898.15
  4. Step 4: Simplify right side
    171,543.11x = 16,700,851,642.36
  5. Step 5: Solve for x
    x = 16,700,851,642.36/171,543.11
  6. Step 6: Final answer
    x = 97,356.59

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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.