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Finding the Fourth Proportional to 652,518,494.40, 978,777,741.60 and 627,436,228.80

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Solution

The fourth proportional to 652,518,494.40, 978,777,741.60 and 627,436,228.80 is: 941,154,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,518,494.40 : 978,777,741.60 = 627,436,228.80 : x
  2. Step 2: Convert to fraction form
    652,518,494.40/978,777,741.60 = 627,436,228.80/x
  3. Step 3: Cross multiply
    652,518,494.40x = 978,777,741.60 × 627,436,228.80
  4. Step 4: Simplify right side
    652,518,494.40x = 614,120,615,022,884,864
  5. Step 5: Solve for x
    x = 614,120,615,022,884,864/652,518,494.40
  6. Step 6: Final answer
    x = 941,154,343.20

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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.