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Finding the Fourth Proportional to 171,935.90, 257,903.85 and 47,276.90

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Solution

The fourth proportional to 171,935.90, 257,903.85 and 47,276.90 is: 70,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,935.90 : 257,903.85 = 47,276.90 : x
  2. Step 2: Convert to fraction form
    171,935.90/257,903.85 = 47,276.90/x
  3. Step 3: Cross multiply
    171,935.90x = 257,903.85 × 47,276.90
  4. Step 4: Simplify right side
    171,935.90x = 12,192,894,526.07
  5. Step 5: Solve for x
    x = 12,192,894,526.07/171,935.90
  6. Step 6: Final answer
    x = 70,915.35

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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.