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Finding the Fourth Proportional to 72,791,173,999.70, 109,186,760,999.55 and 72,791,173,999.70

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Solution

The fourth proportional to 72,791,173,999.70, 109,186,760,999.55 and 72,791,173,999.70 is: 109,186,760,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,791,173,999.70 : 109,186,760,999.55 = 72,791,173,999.70 : x
  2. Step 2: Convert to fraction form
    72,791,173,999.70/109,186,760,999.55 = 72,791,173,999.70/x
  3. Step 3: Cross multiply
    72,791,173,999.70x = 109,186,760,999.55 × 72,791,173,999.70
  4. Step 4: Simplify right side
    72,791,173,999.70x = 7,947,832,518,381,902,233,600
  5. Step 5: Solve for x
    x = 7,947,832,518,381,902,233,600/72,791,173,999.70
  6. Step 6: Final answer
    x = 109,186,760,999.55

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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.