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Finding the Fourth Proportional to 618,557.76, 926,261.28 and 407,556.16

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Solution

The fourth proportional to 618,557.76, 926,261.28 and 407,556.16 is: 610,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,557.76 : 926,261.28 = 407,556.16 : x
  2. Step 2: Convert to fraction form
    618,557.76/926,261.28 = 407,556.16/x
  3. Step 3: Cross multiply
    618,557.76x = 926,261.28 × 407,556.16
  4. Step 4: Simplify right side
    618,557.76x = 377,503,490,433.49
  5. Step 5: Solve for x
    x = 377,503,490,433.49/618,557.76
  6. Step 6: Final answer
    x = 610,296.26

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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.