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Finding the Fourth Proportional to 80,644,547.80, 120,966,821.70 and 80,644,547.80

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Solution

The fourth proportional to 80,644,547.80, 120,966,821.70 and 80,644,547.80 is: 120,966,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,644,547.80 : 120,966,821.70 = 80,644,547.80 : x
  2. Step 2: Convert to fraction form
    80,644,547.80/120,966,821.70 = 80,644,547.80/x
  3. Step 3: Cross multiply
    80,644,547.80x = 120,966,821.70 × 80,644,547.80
  4. Step 4: Simplify right side
    80,644,547.80x = 9,755,314,634,799,728
  5. Step 5: Solve for x
    x = 9,755,314,634,799,728/80,644,547.80
  6. Step 6: Final answer
    x = 120,966,821.70

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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.