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Finding the Fourth Proportional to 15,696,749.20, 21,925,060.40 and 15,696,749.20

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Solution

The fourth proportional to 15,696,749.20, 21,925,060.40 and 15,696,749.20 is: 21,925,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696,749.20 : 21,925,060.40 = 15,696,749.20 : x
  2. Step 2: Convert to fraction form
    15,696,749.20/21,925,060.40 = 15,696,749.20/x
  3. Step 3: Cross multiply
    15,696,749.20x = 21,925,060.40 × 15,696,749.20
  4. Step 4: Simplify right side
    15,696,749.20x = 344,152,174,293,651.62
  5. Step 5: Solve for x
    x = 344,152,174,293,651.62/15,696,749.20
  6. Step 6: Final answer
    x = 21,925,060.40

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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.