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Finding the Fourth Proportional to 998,973,008.40, 1,498,459,512.60 and 998,973,008.40

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Solution

The fourth proportional to 998,973,008.40, 1,498,459,512.60 and 998,973,008.40 is: 1,498,459,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,973,008.40 : 1,498,459,512.60 = 998,973,008.40 : x
  2. Step 2: Convert to fraction form
    998,973,008.40/1,498,459,512.60 = 998,973,008.40/x
  3. Step 3: Cross multiply
    998,973,008.40x = 1,498,459,512.60 × 998,973,008.40
  4. Step 4: Simplify right side
    998,973,008.40x = 1,496,920,607,267,619,584
  5. Step 5: Solve for x
    x = 1,496,920,607,267,619,584/998,973,008.40
  6. Step 6: Final answer
    x = 1,498,459,512.60

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1.5x scale

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.