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Finding the Fourth Proportional to 529,880.69, 731,228.47 and 288,158.07

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Solution

The fourth proportional to 529,880.69, 731,228.47 and 288,158.07 is: 397,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,880.69 : 731,228.47 = 288,158.07 : x
  2. Step 2: Convert to fraction form
    529,880.69/731,228.47 = 288,158.07/x
  3. Step 3: Cross multiply
    529,880.69x = 731,228.47 × 288,158.07
  4. Step 4: Simplify right side
    529,880.69x = 210,709,383,923.86
  5. Step 5: Solve for x
    x = 210,709,383,923.86/529,880.69
  6. Step 6: Final answer
    x = 397,654.40

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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.