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Finding the Fourth Proportional to 632,807,719.60, 949,211,579.40 and 628,776,641.20

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Solution

The fourth proportional to 632,807,719.60, 949,211,579.40 and 628,776,641.20 is: 943,164,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,807,719.60 : 949,211,579.40 = 628,776,641.20 : x
  2. Step 2: Convert to fraction form
    632,807,719.60/949,211,579.40 = 628,776,641.20/x
  3. Step 3: Cross multiply
    632,807,719.60x = 949,211,579.40 × 628,776,641.20
  4. Step 4: Simplify right side
    632,807,719.60x = 596,842,068,683,279,104
  5. Step 5: Solve for x
    x = 596,842,068,683,279,104/632,807,719.60
  6. Step 6: Final answer
    x = 943,164,961.80

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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.