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Finding the Fourth Proportional to 560,778.54, 774,886.17 and 399,353.34

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Solution

The fourth proportional to 560,778.54, 774,886.17 and 399,353.34 is: 551,828.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,778.54 : 774,886.17 = 399,353.34 : x
  2. Step 2: Convert to fraction form
    560,778.54/774,886.17 = 399,353.34/x
  3. Step 3: Cross multiply
    560,778.54x = 774,886.17 × 399,353.34
  4. Step 4: Simplify right side
    560,778.54x = 309,453,380,109.31
  5. Step 5: Solve for x
    x = 309,453,380,109.31/560,778.54
  6. Step 6: Final answer
    x = 551,828.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.