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Finding the Fourth Proportional to 472,079.52, 651,461.52 and 257,221.35

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Solution

The fourth proportional to 472,079.52, 651,461.52 and 257,221.35 is: 354,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,079.52 : 651,461.52 = 257,221.35 : x
  2. Step 2: Convert to fraction form
    472,079.52/651,461.52 = 257,221.35/x
  3. Step 3: Cross multiply
    472,079.52x = 651,461.52 × 257,221.35
  4. Step 4: Simplify right side
    472,079.52x = 167,569,811,647.45
  5. Step 5: Solve for x
    x = 167,569,811,647.45/472,079.52
  6. Step 6: Final answer
    x = 354,960.99

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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.