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Finding the Fourth Proportional to 836,793,728.76, 1,154,740,669.09 and 455,317,338.78

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Solution

The fourth proportional to 836,793,728.76, 1,154,740,669.09 and 455,317,338.78 is: 628,319,059.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,793,728.76 : 1,154,740,669.09 = 455,317,338.78 : x
  2. Step 2: Convert to fraction form
    836,793,728.76/1,154,740,669.09 = 455,317,338.78/x
  3. Step 3: Cross multiply
    836,793,728.76x = 1,154,740,669.09 × 455,317,338.78
  4. Step 4: Simplify right side
    836,793,728.76x = 525,773,448,431,095,360
  5. Step 5: Solve for x
    x = 525,773,448,431,095,360/836,793,728.76
  6. Step 6: Final answer
    x = 628,319,059.24

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.