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Finding the Fourth Proportional to 18,864,692,912.40, 28,242,619,810.20 and 18,864,692,912.40

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Solution

The fourth proportional to 18,864,692,912.40, 28,242,619,810.20 and 18,864,692,912.40 is: 28,242,619,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864,692,912.40 : 28,242,619,810.20 = 18,864,692,912.40 : x
  2. Step 2: Convert to fraction form
    18,864,692,912.40/28,242,619,810.20 = 18,864,692,912.40/x
  3. Step 3: Cross multiply
    18,864,692,912.40x = 28,242,619,810.20 × 18,864,692,912.40
  4. Step 4: Simplify right side
    18,864,692,912.40x = 532,788,349,761,087,799,296
  5. Step 5: Solve for x
    x = 532,788,349,761,087,799,296/18,864,692,912.40
  6. Step 6: Final answer
    x = 28,242,619,810.20

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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.