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Finding the Fourth Proportional to 523,988.80, 786,760.80 and 366,913.60

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Solution

The fourth proportional to 523,988.80, 786,760.80 and 366,913.60 is: 550,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,988.80 : 786,760.80 = 366,913.60 : x
  2. Step 2: Convert to fraction form
    523,988.80/786,760.80 = 366,913.60/x
  3. Step 3: Cross multiply
    523,988.80x = 786,760.80 × 366,913.60
  4. Step 4: Simplify right side
    523,988.80x = 288,673,237,466.88
  5. Step 5: Solve for x
    x = 288,673,237,466.88/523,988.80
  6. Step 6: Final answer
    x = 550,914.90

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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.