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Finding the Fourth Proportional to 19,658,656.80, 29,487,985.20 and 17,603,751.60

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Solution

The fourth proportional to 19,658,656.80, 29,487,985.20 and 17,603,751.60 is: 26,405,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658,656.80 : 29,487,985.20 = 17,603,751.60 : x
  2. Step 2: Convert to fraction form
    19,658,656.80/29,487,985.20 = 17,603,751.60/x
  3. Step 3: Cross multiply
    19,658,656.80x = 29,487,985.20 × 17,603,751.60
  4. Step 4: Simplify right side
    19,658,656.80x = 519,099,166,645,276.38
  5. Step 5: Solve for x
    x = 519,099,166,645,276.38/19,658,656.80
  6. Step 6: Final answer
    x = 26,405,627.40

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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.