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Finding the Fourth Proportional to 633,312,208.80, 949,968,313.20 and 378,508,240.80

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Solution

The fourth proportional to 633,312,208.80, 949,968,313.20 and 378,508,240.80 is: 567,762,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,312,208.80 : 949,968,313.20 = 378,508,240.80 : x
  2. Step 2: Convert to fraction form
    633,312,208.80/949,968,313.20 = 378,508,240.80/x
  3. Step 3: Cross multiply
    633,312,208.80x = 949,968,313.20 × 378,508,240.80
  4. Step 4: Simplify right side
    633,312,208.80x = 359,570,835,045,075,456
  5. Step 5: Solve for x
    x = 359,570,835,045,075,456/633,312,208.80
  6. Step 6: Final answer
    x = 567,762,361.20

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Double scale
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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.