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Finding the Fourth Proportional to 886,000.40, 1,329,000.60 and 620,061.20

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Solution

The fourth proportional to 886,000.40, 1,329,000.60 and 620,061.20 is: 930,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,000.40 : 1,329,000.60 = 620,061.20 : x
  2. Step 2: Convert to fraction form
    886,000.40/1,329,000.60 = 620,061.20/x
  3. Step 3: Cross multiply
    886,000.40x = 1,329,000.60 × 620,061.20
  4. Step 4: Simplify right side
    886,000.40x = 824,061,706,836.72
  5. Step 5: Solve for x
    x = 824,061,706,836.72/886,000.40
  6. Step 6: Final answer
    x = 930,091.80

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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.