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Finding the Fourth Proportional to 519,840.30, 780,106.05 and 295,200.30

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Solution

The fourth proportional to 519,840.30, 780,106.05 and 295,200.30 is: 442,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,840.30 : 780,106.05 = 295,200.30 : x
  2. Step 2: Convert to fraction form
    519,840.30/780,106.05 = 295,200.30/x
  3. Step 3: Cross multiply
    519,840.30x = 780,106.05 × 295,200.30
  4. Step 4: Simplify right side
    519,840.30x = 230,287,539,991.82
  5. Step 5: Solve for x
    x = 230,287,539,991.82/519,840.30
  6. Step 6: Final answer
    x = 442,996.70

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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.