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Finding the Fourth Proportional to 531,572,915.70, 742,388,096.70 and 531,572,915.70

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Solution

The fourth proportional to 531,572,915.70, 742,388,096.70 and 531,572,915.70 is: 742,388,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,572,915.70 : 742,388,096.70 = 531,572,915.70 : x
  2. Step 2: Convert to fraction form
    531,572,915.70/742,388,096.70 = 531,572,915.70/x
  3. Step 3: Cross multiply
    531,572,915.70x = 742,388,096.70 × 531,572,915.70
  4. Step 4: Simplify right side
    531,572,915.70x = 394,633,405,143,792,576
  5. Step 5: Solve for x
    x = 394,633,405,143,792,576/531,572,915.70
  6. Step 6: Final answer
    x = 742,388,096.70

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.