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Finding the Fourth Proportional to 76,608,671.60, 114,913,007.40 and 61,492,127.60

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Solution

The fourth proportional to 76,608,671.60, 114,913,007.40 and 61,492,127.60 is: 92,238,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,608,671.60 : 114,913,007.40 = 61,492,127.60 : x
  2. Step 2: Convert to fraction form
    76,608,671.60/114,913,007.40 = 61,492,127.60/x
  3. Step 3: Cross multiply
    76,608,671.60x = 114,913,007.40 × 61,492,127.60
  4. Step 4: Simplify right side
    76,608,671.60x = 7,066,245,313,940,545
  5. Step 5: Solve for x
    x = 7,066,245,313,940,545/76,608,671.60
  6. Step 6: Final answer
    x = 92,238,191.40

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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.