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Finding the Fourth Proportional to 656,078.94, 905,455.83 and 401,598.30

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Solution

The fourth proportional to 656,078.94, 905,455.83 and 401,598.30 is: 554,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,078.94 : 905,455.83 = 401,598.30 : x
  2. Step 2: Convert to fraction form
    656,078.94/905,455.83 = 401,598.30/x
  3. Step 3: Cross multiply
    656,078.94x = 905,455.83 × 401,598.30
  4. Step 4: Simplify right side
    656,078.94x = 363,629,522,053.09
  5. Step 5: Solve for x
    x = 363,629,522,053.09/656,078.94
  6. Step 6: Final answer
    x = 554,246.60

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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.