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Finding the Fourth Proportional to 896,990,671.90, 1,345,486,007.85 and 655,125,967.90

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Solution

The fourth proportional to 896,990,671.90, 1,345,486,007.85 and 655,125,967.90 is: 982,688,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,990,671.90 : 1,345,486,007.85 = 655,125,967.90 : x
  2. Step 2: Convert to fraction form
    896,990,671.90/1,345,486,007.85 = 655,125,967.90/x
  3. Step 3: Cross multiply
    896,990,671.90x = 1,345,486,007.85 × 655,125,967.90
  4. Step 4: Simplify right side
    896,990,671.90x = 881,462,823,188,638,208
  5. Step 5: Solve for x
    x = 881,462,823,188,638,208/896,990,671.90
  6. Step 6: Final answer
    x = 982,688,951.85

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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.