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Finding the Fourth Proportional to 519,783.90, 779,220.30 and 249,777.55

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Solution

The fourth proportional to 519,783.90, 779,220.30 and 249,777.55 is: 374,447.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,783.90 : 779,220.30 = 249,777.55 : x
  2. Step 2: Convert to fraction form
    519,783.90/779,220.30 = 249,777.55/x
  3. Step 3: Cross multiply
    519,783.90x = 779,220.30 × 249,777.55
  4. Step 4: Simplify right side
    519,783.90x = 194,631,737,444.27
  5. Step 5: Solve for x
    x = 194,631,737,444.27/519,783.90
  6. Step 6: Final answer
    x = 374,447.41

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Double scale
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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.