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Finding the Fourth Proportional to 1,664,566.61, 2,297,109.80 and 939,444.89

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Solution

The fourth proportional to 1,664,566.61, 2,297,109.80 and 939,444.89 is: 1,296,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,566.61 : 2,297,109.80 = 939,444.89 : x
  2. Step 2: Convert to fraction form
    1,664,566.61/2,297,109.80 = 939,444.89/x
  3. Step 3: Cross multiply
    1,664,566.61x = 2,297,109.80 × 939,444.89
  4. Step 4: Simplify right side
    1,664,566.61x = 2,158,008,063,378.92
  5. Step 5: Solve for x
    x = 2,158,008,063,378.92/1,664,566.61
  6. Step 6: Final answer
    x = 1,296,438.39

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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.