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Finding the Fourth Proportional to 440,603.52, 657,235.20 and 398,083.20

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Solution

The fourth proportional to 440,603.52, 657,235.20 and 398,083.20 is: 593,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,603.52 : 657,235.20 = 398,083.20 : x
  2. Step 2: Convert to fraction form
    440,603.52/657,235.20 = 398,083.20/x
  3. Step 3: Cross multiply
    440,603.52x = 657,235.20 × 398,083.20
  4. Step 4: Simplify right side
    440,603.52x = 261,634,291,568.64
  5. Step 5: Solve for x
    x = 261,634,291,568.64/440,603.52
  6. Step 6: Final answer
    x = 593,808.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.