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Finding the Fourth Proportional to 70,010,593.60, 105,015,890.40 and 18,892,530.40

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Solution

The fourth proportional to 70,010,593.60, 105,015,890.40 and 18,892,530.40 is: 28,338,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,010,593.60 : 105,015,890.40 = 18,892,530.40 : x
  2. Step 2: Convert to fraction form
    70,010,593.60/105,015,890.40 = 18,892,530.40/x
  3. Step 3: Cross multiply
    70,010,593.60x = 105,015,890.40 × 18,892,530.40
  4. Step 4: Simplify right side
    70,010,593.60x = 1,984,015,901,865,068
  5. Step 5: Solve for x
    x = 1,984,015,901,865,068/70,010,593.60
  6. Step 6: Final answer
    x = 28,338,795.60

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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.