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Finding the Fourth Proportional to 661,595.42, 912,665.20 and 432,286.86

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Solution

The fourth proportional to 661,595.42, 912,665.20 and 432,286.86 is: 596,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,595.42 : 912,665.20 = 432,286.86 : x
  2. Step 2: Convert to fraction form
    661,595.42/912,665.20 = 432,286.86/x
  3. Step 3: Cross multiply
    661,595.42x = 912,665.20 × 432,286.86
  4. Step 4: Simplify right side
    661,595.42x = 394,533,173,539.27
  5. Step 5: Solve for x
    x = 394,533,173,539.27/661,595.42
  6. Step 6: Final answer
    x = 596,336.01

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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.