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Finding the Fourth Proportional to 4,978,159.55, 7,468,789.40 and 1,783,313.40

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Solution

The fourth proportional to 4,978,159.55, 7,468,789.40 and 1,783,313.40 is: 2,675,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,159.55 : 7,468,789.40 = 1,783,313.40 : x
  2. Step 2: Convert to fraction form
    4,978,159.55/7,468,789.40 = 1,783,313.40/x
  3. Step 3: Cross multiply
    4,978,159.55x = 7,468,789.40 × 1,783,313.40
  4. Step 4: Simplify right side
    4,978,159.55x = 13,319,192,209,881.39
  5. Step 5: Solve for x
    x = 13,319,192,209,881.39/4,978,159.55
  6. Step 6: Final answer
    x = 2,675,525.38

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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.