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Finding the Fourth Proportional to 122,482,706.40, 183,724,059.60 and 83,683,576.80

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Solution

The fourth proportional to 122,482,706.40, 183,724,059.60 and 83,683,576.80 is: 125,525,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,482,706.40 : 183,724,059.60 = 83,683,576.80 : x
  2. Step 2: Convert to fraction form
    122,482,706.40/183,724,059.60 = 83,683,576.80/x
  3. Step 3: Cross multiply
    122,482,706.40x = 183,724,059.60 × 83,683,576.80
  4. Step 4: Simplify right side
    122,482,706.40x = 15,374,686,451,544,376
  5. Step 5: Solve for x
    x = 15,374,686,451,544,376/122,482,706.40
  6. Step 6: Final answer
    x = 125,525,365.20

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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.