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Finding the Fourth Proportional to 21,969,881.80, 32,964,153.90 and 10,604,480.20

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Solution

The fourth proportional to 21,969,881.80, 32,964,153.90 and 10,604,480.20 is: 15,911,224.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969,881.80 : 32,964,153.90 = 10,604,480.20 : x
  2. Step 2: Convert to fraction form
    21,969,881.80/32,964,153.90 = 10,604,480.20/x
  3. Step 3: Cross multiply
    21,969,881.80x = 32,964,153.90 × 10,604,480.20
  4. Step 4: Simplify right side
    21,969,881.80x = 349,567,717,342,302.75
  5. Step 5: Solve for x
    x = 349,567,717,342,302.75/21,969,881.80
  6. Step 6: Final answer
    x = 15,911,224.31

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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.