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Finding the Fourth Proportional to 623,328.20, 934,992.30 and 619,391.60

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Solution

The fourth proportional to 623,328.20, 934,992.30 and 619,391.60 is: 929,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,328.20 : 934,992.30 = 619,391.60 : x
  2. Step 2: Convert to fraction form
    623,328.20/934,992.30 = 619,391.60/x
  3. Step 3: Cross multiply
    623,328.20x = 934,992.30 × 619,391.60
  4. Step 4: Simplify right side
    623,328.20x = 579,126,376,684.68
  5. Step 5: Solve for x
    x = 579,126,376,684.68/623,328.20
  6. Step 6: Final answer
    x = 929,087.40

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Similar ratio
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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.