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Finding the Fourth Proportional to 530,938.91, 732,694.50 and 289,220.90

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Solution

The fourth proportional to 530,938.91, 732,694.50 and 289,220.90 is: 399,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,938.91 : 732,694.50 = 289,220.90 : x
  2. Step 2: Convert to fraction form
    530,938.91/732,694.50 = 289,220.90/x
  3. Step 3: Cross multiply
    530,938.91x = 732,694.50 × 289,220.90
  4. Step 4: Simplify right side
    530,938.91x = 211,910,559,051.58
  5. Step 5: Solve for x
    x = 211,910,559,051.58/530,938.91
  6. Step 6: Final answer
    x = 399,124.18

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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.