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Finding the Fourth Proportional to 18,398,899.71, 25,390,649.51 and 10,139,258.34

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Solution

The fourth proportional to 18,398,899.71, 25,390,649.51 and 10,139,258.34 is: 13,992,269.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398,899.71 : 25,390,649.51 = 10,139,258.34 : x
  2. Step 2: Convert to fraction form
    18,398,899.71/25,390,649.51 = 10,139,258.34/x
  3. Step 3: Cross multiply
    18,398,899.71x = 25,390,649.51 × 10,139,258.34
  4. Step 4: Simplify right side
    18,398,899.71x = 257,442,354,802,284.44
  5. Step 5: Solve for x
    x = 257,442,354,802,284.44/18,398,899.71
  6. Step 6: Final answer
    x = 13,992,269.04

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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.