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Finding the Fourth Proportional to 576,911,273.20, 865,366,909.80 and 167,980,764.40

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Solution

The fourth proportional to 576,911,273.20, 865,366,909.80 and 167,980,764.40 is: 251,971,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,911,273.20 : 865,366,909.80 = 167,980,764.40 : x
  2. Step 2: Convert to fraction form
    576,911,273.20/865,366,909.80 = 167,980,764.40/x
  3. Step 3: Cross multiply
    576,911,273.20x = 865,366,909.80 × 167,980,764.40
  4. Step 4: Simplify right side
    576,911,273.20x = 145,364,994,994,669,856
  5. Step 5: Solve for x
    x = 145,364,994,994,669,856/576,911,273.20
  6. Step 6: Final answer
    x = 251,971,146.60

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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.