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Finding the Fourth Proportional to 19,171,311,312.60, 28,756,966,968.90 and 19,171,311,312.60

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Solution

The fourth proportional to 19,171,311,312.60, 28,756,966,968.90 and 19,171,311,312.60 is: 28,756,966,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171,311,312.60 : 28,756,966,968.90 = 19,171,311,312.60 : x
  2. Step 2: Convert to fraction form
    19,171,311,312.60/28,756,966,968.90 = 19,171,311,312.60/x
  3. Step 3: Cross multiply
    19,171,311,312.60x = 28,756,966,968.90 × 19,171,311,312.60
  4. Step 4: Simplify right side
    19,171,311,312.60x = 551,308,766,166,937,108,480
  5. Step 5: Solve for x
    x = 551,308,766,166,937,108,480/19,171,311,312.60
  6. Step 6: Final answer
    x = 28,756,966,968.90

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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.