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Finding the Fourth Proportional to 979,848,010.20, 1,469,772,015.30 and 669,454,973.40

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Solution

The fourth proportional to 979,848,010.20, 1,469,772,015.30 and 669,454,973.40 is: 1,004,182,460.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,848,010.20 : 1,469,772,015.30 = 669,454,973.40 : x
  2. Step 2: Convert to fraction form
    979,848,010.20/1,469,772,015.30 = 669,454,973.40/x
  3. Step 3: Cross multiply
    979,848,010.20x = 1,469,772,015.30 × 669,454,973.40
  4. Step 4: Simplify right side
    979,848,010.20x = 983,946,185,406,725,888
  5. Step 5: Solve for x
    x = 983,946,185,406,725,888/979,848,010.20
  6. Step 6: Final answer
    x = 1,004,182,460.10

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Double scale
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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.