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Finding the Fourth Proportional to 15,214,960,725.30, 21,257,409,368.70 and 15,214,960,725.30

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Solution

The fourth proportional to 15,214,960,725.30, 21,257,409,368.70 and 15,214,960,725.30 is: 21,257,409,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,214,960,725.30 : 21,257,409,368.70 = 15,214,960,725.30 : x
  2. Step 2: Convert to fraction form
    15,214,960,725.30/21,257,409,368.70 = 15,214,960,725.30/x
  3. Step 3: Cross multiply
    15,214,960,725.30x = 21,257,409,368.70 × 15,214,960,725.30
  4. Step 4: Simplify right side
    15,214,960,725.30x = 323,430,648,666,394,787,840
  5. Step 5: Solve for x
    x = 323,430,648,666,394,787,840/15,214,960,725.30
  6. Step 6: Final answer
    x = 21,257,409,368.70

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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.