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Finding the Fourth Proportional to 15,553,276.30, 21,796,981.70 and 15,553,276.30

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Solution

The fourth proportional to 15,553,276.30, 21,796,981.70 and 15,553,276.30 is: 21,796,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553,276.30 : 21,796,981.70 = 15,553,276.30 : x
  2. Step 2: Convert to fraction form
    15,553,276.30/21,796,981.70 = 15,553,276.30/x
  3. Step 3: Cross multiply
    15,553,276.30x = 21,796,981.70 × 15,553,276.30
  4. Step 4: Simplify right side
    15,553,276.30x = 339,014,478,886,143.69
  5. Step 5: Solve for x
    x = 339,014,478,886,143.69/15,553,276.30
  6. Step 6: Final answer
    x = 21,796,981.70

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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.