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Finding the Fourth Proportional to 19,764,658.60, 29,646,987.90 and 16,646,871.40

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Solution

The fourth proportional to 19,764,658.60, 29,646,987.90 and 16,646,871.40 is: 24,970,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764,658.60 : 29,646,987.90 = 16,646,871.40 : x
  2. Step 2: Convert to fraction form
    19,764,658.60/29,646,987.90 = 16,646,871.40/x
  3. Step 3: Cross multiply
    19,764,658.60x = 29,646,987.90 × 16,646,871.40
  4. Step 4: Simplify right side
    19,764,658.60x = 493,529,594,968,656.06
  5. Step 5: Solve for x
    x = 493,529,594,968,656.06/19,764,658.60
  6. Step 6: Final answer
    x = 24,970,307.10

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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.