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Finding the Fourth Proportional to 18,864,692,909.40, 28,242,619,805.70 and 18,864,692,909.40

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Solution

The fourth proportional to 18,864,692,909.40, 28,242,619,805.70 and 18,864,692,909.40 is: 28,242,619,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864,692,909.40 : 28,242,619,805.70 = 18,864,692,909.40 : x
  2. Step 2: Convert to fraction form
    18,864,692,909.40/28,242,619,805.70 = 18,864,692,909.40/x
  3. Step 3: Cross multiply
    18,864,692,909.40x = 28,242,619,805.70 × 18,864,692,909.40
  4. Step 4: Simplify right side
    18,864,692,909.40x = 532,788,349,591,468,834,816
  5. Step 5: Solve for x
    x = 532,788,349,591,468,834,816/18,864,692,909.40
  6. Step 6: Final answer
    x = 28,242,619,805.70

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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.