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Finding the Fourth Proportional to 283,888.53, 391,793.76 and 212,144.40

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Solution

The fourth proportional to 283,888.53, 391,793.76 and 212,144.40 is: 292,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,888.53 : 391,793.76 = 212,144.40 : x
  2. Step 2: Convert to fraction form
    283,888.53/391,793.76 = 212,144.40/x
  3. Step 3: Cross multiply
    283,888.53x = 391,793.76 × 212,144.40
  4. Step 4: Simplify right side
    283,888.53x = 83,116,852,138.94
  5. Step 5: Solve for x
    x = 83,116,852,138.94/283,888.53
  6. Step 6: Final answer
    x = 292,779.89

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1.5x scale

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.