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Finding the Fourth Proportional to 159,018,671.90, 238,528,007.85 and 140,878,819.10

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Solution

The fourth proportional to 159,018,671.90, 238,528,007.85 and 140,878,819.10 is: 211,318,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,018,671.90 : 238,528,007.85 = 140,878,819.10 : x
  2. Step 2: Convert to fraction form
    159,018,671.90/238,528,007.85 = 140,878,819.10/x
  3. Step 3: Cross multiply
    159,018,671.90x = 238,528,007.85 × 140,878,819.10
  4. Step 4: Simplify right side
    159,018,671.90x = 33,603,544,068,183,528
  5. Step 5: Solve for x
    x = 33,603,544,068,183,528/159,018,671.90
  6. Step 6: Final answer
    x = 211,318,228.65

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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.