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Finding the Fourth Proportional to 7,118,697.96, 9,824,666.40 and 4,021,351.92

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Solution

The fourth proportional to 7,118,697.96, 9,824,666.40 and 4,021,351.92 is: 5,549,953.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118,697.96 : 9,824,666.40 = 4,021,351.92 : x
  2. Step 2: Convert to fraction form
    7,118,697.96/9,824,666.40 = 4,021,351.92/x
  3. Step 3: Cross multiply
    7,118,697.96x = 9,824,666.40 × 4,021,351.92
  4. Step 4: Simplify right side
    7,118,697.96x = 39,508,441,090,999.49
  5. Step 5: Solve for x
    x = 39,508,441,090,999.49/7,118,697.96
  6. Step 6: Final answer
    x = 5,549,953.28

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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.