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Finding the Fourth Proportional to 537,815.40, 807,500.70 and 405,623.40

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Solution

The fourth proportional to 537,815.40, 807,500.70 and 405,623.40 is: 609,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,815.40 : 807,500.70 = 405,623.40 : x
  2. Step 2: Convert to fraction form
    537,815.40/807,500.70 = 405,623.40/x
  3. Step 3: Cross multiply
    537,815.40x = 807,500.70 × 405,623.40
  4. Step 4: Simplify right side
    537,815.40x = 327,541,179,436.38
  5. Step 5: Solve for x
    x = 327,541,179,436.38/537,815.40
  6. Step 6: Final answer
    x = 609,021.57

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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.