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Finding the Fourth Proportional to 1,048,919,123.30, 1,570,355,376.15 and 1,048,919,123.30

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Solution

The fourth proportional to 1,048,919,123.30, 1,570,355,376.15 and 1,048,919,123.30 is: 1,570,355,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048,919,123.30 : 1,570,355,376.15 = 1,048,919,123.30 : x
  2. Step 2: Convert to fraction form
    1,048,919,123.30/1,570,355,376.15 = 1,048,919,123.30/x
  3. Step 3: Cross multiply
    1,048,919,123.30x = 1,570,355,376.15 × 1,048,919,123.30
  4. Step 4: Simplify right side
    1,048,919,123.30x = 1,647,175,784,420,699,648
  5. Step 5: Solve for x
    x = 1,647,175,784,420,699,648/1,048,919,123.30
  6. Step 6: Final answer
    x = 1,570,355,376.15

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Double scale
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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.