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Finding the Fourth Proportional to 691,807.80, 1,037,711.70 and 573,709.80

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Solution

The fourth proportional to 691,807.80, 1,037,711.70 and 573,709.80 is: 860,564.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,807.80 : 1,037,711.70 = 573,709.80 : x
  2. Step 2: Convert to fraction form
    691,807.80/1,037,711.70 = 573,709.80/x
  3. Step 3: Cross multiply
    691,807.80x = 1,037,711.70 × 573,709.80
  4. Step 4: Simplify right side
    691,807.80x = 595,345,371,864.66
  5. Step 5: Solve for x
    x = 595,345,371,864.66/691,807.80
  6. Step 6: Final answer
    x = 860,564.70

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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.