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Finding the Fourth Proportional to 19,315,661,941.85, 28,973,492,912.78 and 19,315,661,941.85

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Solution

The fourth proportional to 19,315,661,941.85, 28,973,492,912.78 and 19,315,661,941.85 is: 28,973,492,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315,661,941.85 : 28,973,492,912.78 = 19,315,661,941.85 : x
  2. Step 2: Convert to fraction form
    19,315,661,941.85/28,973,492,912.78 = 19,315,661,941.85/x
  3. Step 3: Cross multiply
    19,315,661,941.85x = 28,973,492,912.78 × 19,315,661,941.85
  4. Step 4: Simplify right side
    19,315,661,941.85x = 559,642,194,377,748,774,912
  5. Step 5: Solve for x
    x = 559,642,194,377,748,774,912/19,315,661,941.85
  6. Step 6: Final answer
    x = 28,973,492,912.78

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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.