Home / 20,387,838,411.99-28,136,631,072.51-12,359,517,328.89

Finding the Fourth Proportional to 20,387,838,411.99, 28,136,631,072.51 and 12,359,517,328.89

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Solution

The fourth proportional to 20,387,838,411.99, 28,136,631,072.51 and 12,359,517,328.89 is: 17,056,991,147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,838,411.99 : 28,136,631,072.51 = 12,359,517,328.89 : x
  2. Step 2: Convert to fraction form
    20,387,838,411.99/28,136,631,072.51 = 12,359,517,328.89/x
  3. Step 3: Cross multiply
    20,387,838,411.99x = 28,136,631,072.51 × 12,359,517,328.89
  4. Step 4: Simplify right side
    20,387,838,411.99x = 347,755,179,317,272,117,248
  5. Step 5: Solve for x
    x = 347,755,179,317,272,117,248/20,387,838,411.99
  6. Step 6: Final answer
    x = 17,056,991,147.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.