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Finding the Fourth Proportional to 12,021,699,111.20, 16,795,980,220 and 12,021,699,111.20

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Solution

The fourth proportional to 12,021,699,111.20, 16,795,980,220 and 12,021,699,111.20 is: 16,795,980,220

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021,699,111.20 : 16,795,980,220 = 12,021,699,111.20 : x
  2. Step 2: Convert to fraction form
    12,021,699,111.20/16,795,980,220 = 12,021,699,111.20/x
  3. Step 3: Cross multiply
    12,021,699,111.20x = 16,795,980,220 × 12,021,699,111.20
  4. Step 4: Simplify right side
    12,021,699,111.20x = 201,916,220,482,506,784,768
  5. Step 5: Solve for x
    x = 201,916,220,482,506,784,768/12,021,699,111.20
  6. Step 6: Final answer
    x = 16,795,980,220

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.