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Finding the Fourth Proportional to 619,307,358.40, 928,961,037.60 and 251,018,745.40

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Solution

The fourth proportional to 619,307,358.40, 928,961,037.60 and 251,018,745.40 is: 376,528,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,307,358.40 : 928,961,037.60 = 251,018,745.40 : x
  2. Step 2: Convert to fraction form
    619,307,358.40/928,961,037.60 = 251,018,745.40/x
  3. Step 3: Cross multiply
    619,307,358.40x = 928,961,037.60 × 251,018,745.40
  4. Step 4: Simplify right side
    619,307,358.40x = 233,186,634,183,834,240
  5. Step 5: Solve for x
    x = 233,186,634,183,834,240/619,307,358.40
  6. Step 6: Final answer
    x = 376,528,118.10

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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.