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Finding the Fourth Proportional to 440,658.68, 660,783.88 and 356,211.32

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Solution

The fourth proportional to 440,658.68, 660,783.88 and 356,211.32 is: 534,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,658.68 : 660,783.88 = 356,211.32 : x
  2. Step 2: Convert to fraction form
    440,658.68/660,783.88 = 356,211.32/x
  3. Step 3: Cross multiply
    440,658.68x = 660,783.88 × 356,211.32
  4. Step 4: Simplify right side
    440,658.68x = 235,378,698,129.52
  5. Step 5: Solve for x
    x = 235,378,698,129.52/440,658.68
  6. Step 6: Final answer
    x = 534,151.96

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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.