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Finding the Fourth Proportional to 28,916,671.60, 43,291,026.60 and 28,076,863.60

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Solution

The fourth proportional to 28,916,671.60, 43,291,026.60 and 28,076,863.60 is: 42,033,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916,671.60 : 43,291,026.60 = 28,076,863.60 : x
  2. Step 2: Convert to fraction form
    28,916,671.60/43,291,026.60 = 28,076,863.60/x
  3. Step 3: Cross multiply
    28,916,671.60x = 43,291,026.60 × 28,076,863.60
  4. Step 4: Simplify right side
    28,916,671.60x = 1,215,476,248,952,171.75
  5. Step 5: Solve for x
    x = 1,215,476,248,952,171.75/28,916,671.60
  6. Step 6: Final answer
    x = 42,033,753.60

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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.