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Finding the Fourth Proportional to 626,645.21, 864,528.23 and 354,650.76

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Solution

The fourth proportional to 626,645.21, 864,528.23 and 354,650.76 is: 489,281.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,645.21 : 864,528.23 = 354,650.76 : x
  2. Step 2: Convert to fraction form
    626,645.21/864,528.23 = 354,650.76/x
  3. Step 3: Cross multiply
    626,645.21x = 864,528.23 × 354,650.76
  4. Step 4: Simplify right side
    626,645.21x = 306,605,592,037.70
  5. Step 5: Solve for x
    x = 306,605,592,037.70/626,645.21
  6. Step 6: Final answer
    x = 489,281.00

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Double scale
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Similar ratio
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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.