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Finding the Fourth Proportional to 139,740,801.60, 209,640,693.60 and 44,012,366.40

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Solution

The fourth proportional to 139,740,801.60, 209,640,693.60 and 44,012,366.40 is: 66,027,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740,801.60 : 209,640,693.60 = 44,012,366.40 : x
  2. Step 2: Convert to fraction form
    139,740,801.60/209,640,693.60 = 44,012,366.40/x
  3. Step 3: Cross multiply
    139,740,801.60x = 209,640,693.60 × 44,012,366.40
  4. Step 4: Simplify right side
    139,740,801.60x = 9,226,783,019,073,334
  5. Step 5: Solve for x
    x = 9,226,783,019,073,334/139,740,801.60
  6. Step 6: Final answer
    x = 66,027,838.06

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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.