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Finding the Fourth Proportional to 1,234,800.54, 1,852,200.81 and 813,978

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Solution

The fourth proportional to 1,234,800.54, 1,852,200.81 and 813,978 is: 1,220,967

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,800.54 : 1,852,200.81 = 813,978 : x
  2. Step 2: Convert to fraction form
    1,234,800.54/1,852,200.81 = 813,978/x
  3. Step 3: Cross multiply
    1,234,800.54x = 1,852,200.81 × 813,978
  4. Step 4: Simplify right side
    1,234,800.54x = 1,507,650,710,922.18
  5. Step 5: Solve for x
    x = 1,507,650,710,922.18/1,234,800.54
  6. Step 6: Final answer
    x = 1,220,967

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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.