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Finding the Third Proportional to 257,018,653.13 and 391,554,237.94

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Solution

The third proportional to 257,018,653.13 and 391,554,237.94 is: 596,512,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,018,653.13 : 391,554,237.94 = 391,554,237.94 : x
  2. Step 2: Convert to fraction form
    257,018,653.13/391,554,237.94 = 391,554,237.94/x
  3. Step 3: Cross multiply
    257,018,653.13x = 391,554,237.94 × 391,554,237.94
  4. Step 4: Simplify right side
    257,018,653.13x = 153,314,721,246,816,352
  5. Step 5: Solve for x
    x = 153,314,721,246,816,352/257,018,653.13
  6. Step 6: Final answer
    x = 596,512,040.60

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.