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Finding the Fourth Proportional to 6,531,985.80, 9,797,978.70 and 1,983,025.80

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Solution

The fourth proportional to 6,531,985.80, 9,797,978.70 and 1,983,025.80 is: 2,974,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531,985.80 : 9,797,978.70 = 1,983,025.80 : x
  2. Step 2: Convert to fraction form
    6,531,985.80/9,797,978.70 = 1,983,025.80/x
  3. Step 3: Cross multiply
    6,531,985.80x = 9,797,978.70 × 1,983,025.80
  4. Step 4: Simplify right side
    6,531,985.80x = 19,429,644,549,950.46
  5. Step 5: Solve for x
    x = 19,429,644,549,950.46/6,531,985.80
  6. Step 6: Final answer
    x = 2,974,538.70

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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.