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Finding the Fourth Proportional to 15,870,106.80, 22,268,538 and 15,870,106.80

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Solution

The fourth proportional to 15,870,106.80, 22,268,538 and 15,870,106.80 is: 22,268,538

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870,106.80 : 22,268,538 = 15,870,106.80 : x
  2. Step 2: Convert to fraction form
    15,870,106.80/22,268,538 = 15,870,106.80/x
  3. Step 3: Cross multiply
    15,870,106.80x = 22,268,538 × 15,870,106.80
  4. Step 4: Simplify right side
    15,870,106.80x = 353,404,076,339,858.44
  5. Step 5: Solve for x
    x = 353,404,076,339,858.44/15,870,106.80
  6. Step 6: Final answer
    x = 22,268,538

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Double scale
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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.