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Finding the Fourth Proportional to 373,216.50, 515,038.95 and 212,071.77

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Solution

The fourth proportional to 373,216.50, 515,038.95 and 212,071.77 is: 292,659.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,216.50 : 515,038.95 = 212,071.77 : x
  2. Step 2: Convert to fraction form
    373,216.50/515,038.95 = 212,071.77/x
  3. Step 3: Cross multiply
    373,216.50x = 515,038.95 × 212,071.77
  4. Step 4: Simplify right side
    373,216.50x = 109,225,221,745.44
  5. Step 5: Solve for x
    x = 109,225,221,745.44/373,216.50
  6. Step 6: Final answer
    x = 292,659.14

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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.