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Finding the Fourth Proportional to 651,843,616.40, 977,765,424.60 and 345,733,600.40

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Solution

The fourth proportional to 651,843,616.40, 977,765,424.60 and 345,733,600.40 is: 518,600,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,843,616.40 : 977,765,424.60 = 345,733,600.40 : x
  2. Step 2: Convert to fraction form
    651,843,616.40/977,765,424.60 = 345,733,600.40/x
  3. Step 3: Cross multiply
    651,843,616.40x = 977,765,424.60 × 345,733,600.40
  4. Step 4: Simplify right side
    651,843,616.40x = 338,046,360,593,592,704
  5. Step 5: Solve for x
    x = 338,046,360,593,592,704/651,843,616.40
  6. Step 6: Final answer
    x = 518,600,400.60

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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.