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Finding the Fourth Proportional to 21,062,862.45, 31,547,054.48 and 21,062,862.45

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Solution

The fourth proportional to 21,062,862.45, 31,547,054.48 and 21,062,862.45 is: 31,547,054.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,862.45 : 31,547,054.48 = 21,062,862.45 : x
  2. Step 2: Convert to fraction form
    21,062,862.45/31,547,054.48 = 21,062,862.45/x
  3. Step 3: Cross multiply
    21,062,862.45x = 31,547,054.48 × 21,062,862.45
  4. Step 4: Simplify right side
    21,062,862.45x = 664,471,269,109,582
  5. Step 5: Solve for x
    x = 664,471,269,109,582/21,062,862.45
  6. Step 6: Final answer
    x = 31,547,054.48

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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.