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Finding the Fourth Proportional to 18,398,317.84, 25,389,848.73 and 10,138,675.71

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Solution

The fourth proportional to 18,398,317.84, 25,389,848.73 and 10,138,675.71 is: 13,991,466.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398,317.84 : 25,389,848.73 = 10,138,675.71 : x
  2. Step 2: Convert to fraction form
    18,398,317.84/25,389,848.73 = 10,138,675.71/x
  3. Step 3: Cross multiply
    18,398,317.84x = 25,389,848.73 × 10,138,675.71
  4. Step 4: Simplify right side
    18,398,317.84x = 257,419,442,599,425.38
  5. Step 5: Solve for x
    x = 257,419,442,599,425.38/18,398,317.84
  6. Step 6: Final answer
    x = 13,991,466.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.