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Finding the Fourth Proportional to 18,398,904.02, 25,390,655.48 and 10,139,262.66

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Solution

The fourth proportional to 18,398,904.02, 25,390,655.48 and 10,139,262.66 is: 13,992,275.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398,904.02 : 25,390,655.48 = 10,139,262.66 : x
  2. Step 2: Convert to fraction form
    18,398,904.02/25,390,655.48 = 10,139,262.66/x
  3. Step 3: Cross multiply
    18,398,904.02x = 25,390,655.48 × 10,139,262.66
  4. Step 4: Simplify right side
    18,398,904.02x = 257,442,524,970,592.09
  5. Step 5: Solve for x
    x = 257,442,524,970,592.09/18,398,904.02
  6. Step 6: Final answer
    x = 13,992,275.02

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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.