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Finding the Fourth Proportional to 13,142,855.70, 19,714,283.55 and 13,142,855.70

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Solution

The fourth proportional to 13,142,855.70, 19,714,283.55 and 13,142,855.70 is: 19,714,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142,855.70 : 19,714,283.55 = 13,142,855.70 : x
  2. Step 2: Convert to fraction form
    13,142,855.70/19,714,283.55 = 13,142,855.70/x
  3. Step 3: Cross multiply
    13,142,855.70x = 19,714,283.55 × 13,142,855.70
  4. Step 4: Simplify right side
    13,142,855.70x = 259,101,983,926,533.72
  5. Step 5: Solve for x
    x = 259,101,983,926,533.72/13,142,855.70
  6. Step 6: Final answer
    x = 19,714,283.55

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Double scale
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Similar ratio
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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.