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Finding the Fourth Proportional to 621,000.40, 931,500.60 and 617,063.80

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Solution

The fourth proportional to 621,000.40, 931,500.60 and 617,063.80 is: 925,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,000.40 : 931,500.60 = 617,063.80 : x
  2. Step 2: Convert to fraction form
    621,000.40/931,500.60 = 617,063.80/x
  3. Step 3: Cross multiply
    621,000.40x = 931,500.60 × 617,063.80
  4. Step 4: Simplify right side
    621,000.40x = 574,795,299,938.28
  5. Step 5: Solve for x
    x = 574,795,299,938.28/621,000.40
  6. Step 6: Final answer
    x = 925,595.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.