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Finding the Fourth Proportional to 598,575,603.60, 897,863,405.40 and 392,990,605.20

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Solution

The fourth proportional to 598,575,603.60, 897,863,405.40 and 392,990,605.20 is: 589,485,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,575,603.60 : 897,863,405.40 = 392,990,605.20 : x
  2. Step 2: Convert to fraction form
    598,575,603.60/897,863,405.40 = 392,990,605.20/x
  3. Step 3: Cross multiply
    598,575,603.60x = 897,863,405.40 × 392,990,605.20
  4. Step 4: Simplify right side
    598,575,603.60x = 352,851,883,075,078,912
  5. Step 5: Solve for x
    x = 352,851,883,075,078,912/598,575,603.60
  6. Step 6: Final answer
    x = 589,485,907.80

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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.