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Finding the Fourth Proportional to 397,341.60, 548,323.65 and 216,051.95

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Solution

The fourth proportional to 397,341.60, 548,323.65 and 216,051.95 is: 298,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,341.60 : 548,323.65 = 216,051.95 : x
  2. Step 2: Convert to fraction form
    397,341.60/548,323.65 = 216,051.95/x
  3. Step 3: Cross multiply
    397,341.60x = 548,323.65 × 216,051.95
  4. Step 4: Simplify right side
    397,341.60x = 118,466,391,072.00
  5. Step 5: Solve for x
    x = 118,466,391,072.00/397,341.60
  6. Step 6: Final answer
    x = 298,147.47

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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.