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Finding the Fourth Proportional to 619,307,355.90, 928,961,033.85 and 251,018,742.90

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Solution

The fourth proportional to 619,307,355.90, 928,961,033.85 and 251,018,742.90 is: 376,528,114.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,307,355.90 : 928,961,033.85 = 251,018,742.90 : x
  2. Step 2: Convert to fraction form
    619,307,355.90/928,961,033.85 = 251,018,742.90/x
  3. Step 3: Cross multiply
    619,307,355.90x = 928,961,033.85 × 251,018,742.90
  4. Step 4: Simplify right side
    619,307,355.90x = 233,186,630,920,111,360
  5. Step 5: Solve for x
    x = 233,186,630,920,111,360/619,307,355.90
  6. Step 6: Final answer
    x = 376,528,114.35

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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.