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Finding the Fourth Proportional to 56,668,909.90, 79,487,639.30 and 56,668,909.90

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Solution

The fourth proportional to 56,668,909.90, 79,487,639.30 and 56,668,909.90 is: 79,487,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,668,909.90 : 79,487,639.30 = 56,668,909.90 : x
  2. Step 2: Convert to fraction form
    56,668,909.90/79,487,639.30 = 56,668,909.90/x
  3. Step 3: Cross multiply
    56,668,909.90x = 79,487,639.30 × 56,668,909.90
  4. Step 4: Simplify right side
    56,668,909.90x = 4,504,477,869,655,399
  5. Step 5: Solve for x
    x = 4,504,477,869,655,399/56,668,909.90
  6. Step 6: Final answer
    x = 79,487,639.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.