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Finding the Fourth Proportional to 19,692,544.80, 29,525,986.80 and 17,677,005.60

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Solution

The fourth proportional to 19,692,544.80, 29,525,986.80 and 17,677,005.60 is: 26,503,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692,544.80 : 29,525,986.80 = 17,677,005.60 : x
  2. Step 2: Convert to fraction form
    19,692,544.80/29,525,986.80 = 17,677,005.60/x
  3. Step 3: Cross multiply
    19,692,544.80x = 29,525,986.80 × 17,677,005.60
  4. Step 4: Simplify right side
    19,692,544.80x = 521,931,034,009,126.12
  5. Step 5: Solve for x
    x = 521,931,034,009,126.12/19,692,544.80
  6. Step 6: Final answer
    x = 26,503,991.20

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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.