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Finding the Fourth Proportional to 18,091,806.40, 25,395,713.60 and 18,091,806.40

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Solution

The fourth proportional to 18,091,806.40, 25,395,713.60 and 18,091,806.40 is: 25,395,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091,806.40 : 25,395,713.60 = 18,091,806.40 : x
  2. Step 2: Convert to fraction form
    18,091,806.40/25,395,713.60 = 18,091,806.40/x
  3. Step 3: Cross multiply
    18,091,806.40x = 25,395,713.60 × 18,091,806.40
  4. Step 4: Simplify right side
    18,091,806.40x = 459,454,333,841,047
  5. Step 5: Solve for x
    x = 459,454,333,841,047/18,091,806.40
  6. Step 6: Final answer
    x = 25,395,713.60

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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.