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Finding the Fourth Proportional to 523,990.80, 786,763.80 and 366,915.60

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Solution

The fourth proportional to 523,990.80, 786,763.80 and 366,915.60 is: 550,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,990.80 : 786,763.80 = 366,915.60 : x
  2. Step 2: Convert to fraction form
    523,990.80/786,763.80 = 366,915.60/x
  3. Step 3: Cross multiply
    523,990.80x = 786,763.80 × 366,915.60
  4. Step 4: Simplify right side
    523,990.80x = 288,675,911,735.28
  5. Step 5: Solve for x
    x = 288,675,911,735.28/523,990.80
  6. Step 6: Final answer
    x = 550,917.90

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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.