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Finding the Fourth Proportional to 19,808,679.60, 29,713,019.40 and 19,808,679.60

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Solution

The fourth proportional to 19,808,679.60, 29,713,019.40 and 19,808,679.60 is: 29,713,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808,679.60 : 29,713,019.40 = 19,808,679.60 : x
  2. Step 2: Convert to fraction form
    19,808,679.60/29,713,019.40 = 19,808,679.60/x
  3. Step 3: Cross multiply
    19,808,679.60x = 29,713,019.40 × 19,808,679.60
  4. Step 4: Simplify right side
    19,808,679.60x = 588,575,681,243,184.25
  5. Step 5: Solve for x
    x = 588,575,681,243,184.25/19,808,679.60
  6. Step 6: Final answer
    x = 29,713,019.40

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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.