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Finding the Fourth Proportional to 620,610.30, 930,915.45 and 439,526.70

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Solution

The fourth proportional to 620,610.30, 930,915.45 and 439,526.70 is: 659,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,610.30 : 930,915.45 = 439,526.70 : x
  2. Step 2: Convert to fraction form
    620,610.30/930,915.45 = 439,526.70/x
  3. Step 3: Cross multiply
    620,610.30x = 930,915.45 × 439,526.70
  4. Step 4: Simplify right side
    620,610.30x = 409,162,195,717.52
  5. Step 5: Solve for x
    x = 409,162,195,717.52/620,610.30
  6. Step 6: Final answer
    x = 659,290.05

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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.