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Finding the Fourth Proportional to 76,608,411.60, 114,912,617.40 and 31,202,792.40

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Solution

The fourth proportional to 76,608,411.60, 114,912,617.40 and 31,202,792.40 is: 46,804,188.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,608,411.60 : 114,912,617.40 = 31,202,792.40 : x
  2. Step 2: Convert to fraction form
    76,608,411.60/114,912,617.40 = 31,202,792.40/x
  3. Step 3: Cross multiply
    76,608,411.60x = 114,912,617.40 × 31,202,792.40
  4. Step 4: Simplify right side
    76,608,411.60x = 3,585,594,544,872,828
  5. Step 5: Solve for x
    x = 3,585,594,544,872,828/76,608,411.60
  6. Step 6: Final answer
    x = 46,804,188.60

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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.