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Finding the Fourth Proportional to 18,864,692,912.90, 28,242,619,810.95 and 18,864,692,912.90

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Solution

The fourth proportional to 18,864,692,912.90, 28,242,619,810.95 and 18,864,692,912.90 is: 28,242,619,810.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864,692,912.90 : 28,242,619,810.95 = 18,864,692,912.90 : x
  2. Step 2: Convert to fraction form
    18,864,692,912.90/28,242,619,810.95 = 18,864,692,912.90/x
  3. Step 3: Cross multiply
    18,864,692,912.90x = 28,242,619,810.95 × 18,864,692,912.90
  4. Step 4: Simplify right side
    18,864,692,912.90x = 532,788,349,789,357,670,400
  5. Step 5: Solve for x
    x = 532,788,349,789,357,670,400/18,864,692,912.90
  6. Step 6: Final answer
    x = 28,242,619,810.95

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1.5x scale

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.