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Finding the Fourth Proportional to 974,311,978.80, 1,461,467,968.20 and 974,311,978.80

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Solution

The fourth proportional to 974,311,978.80, 1,461,467,968.20 and 974,311,978.80 is: 1,461,467,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,311,978.80 : 1,461,467,968.20 = 974,311,978.80 : x
  2. Step 2: Convert to fraction form
    974,311,978.80/1,461,467,968.20 = 974,311,978.80/x
  3. Step 3: Cross multiply
    974,311,978.80x = 1,461,467,968.20 × 974,311,978.80
  4. Step 4: Simplify right side
    974,311,978.80x = 1,423,925,748,049,757,440
  5. Step 5: Solve for x
    x = 1,423,925,748,049,757,440/974,311,978.80
  6. Step 6: Final answer
    x = 1,461,467,968.20

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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.