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Finding the Fourth Proportional to 993,957,590.60, 1,490,922,389.10 and 448,698,249.80

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Solution

The fourth proportional to 993,957,590.60, 1,490,922,389.10 and 448,698,249.80 is: 673,041,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,957,590.60 : 1,490,922,389.10 = 448,698,249.80 : x
  2. Step 2: Convert to fraction form
    993,957,590.60/1,490,922,389.10 = 448,698,249.80/x
  3. Step 3: Cross multiply
    993,957,590.60x = 1,490,922,389.10 × 448,698,249.80
  4. Step 4: Simplify right side
    993,957,590.60x = 668,974,266,576,804,608
  5. Step 5: Solve for x
    x = 668,974,266,576,804,608/993,957,590.60
  6. Step 6: Final answer
    x = 673,041,056.18

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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.