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Finding the Fourth Proportional to 1,289,296.98, 1,933,281 and 578,715.93

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Solution

The fourth proportional to 1,289,296.98, 1,933,281 and 578,715.93 is: 867,775.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,296.98 : 1,933,281 = 578,715.93 : x
  2. Step 2: Convert to fraction form
    1,289,296.98/1,933,281 = 578,715.93/x
  3. Step 3: Cross multiply
    1,289,296.98x = 1,933,281 × 578,715.93
  4. Step 4: Simplify right side
    1,289,296.98x = 1,118,820,511,866.33
  5. Step 5: Solve for x
    x = 1,118,820,511,866.33/1,289,296.98
  6. Step 6: Final answer
    x = 867,775.64

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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.