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Finding the Fourth Proportional to 692,089,636.92, 955,089,655.02 and 394,746,940.32

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Solution

The fourth proportional to 692,089,636.92, 955,089,655.02 and 394,746,940.32 is: 544,754,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,089,636.92 : 955,089,655.02 = 394,746,940.32 : x
  2. Step 2: Convert to fraction form
    692,089,636.92/955,089,655.02 = 394,746,940.32/x
  3. Step 3: Cross multiply
    692,089,636.92x = 955,089,655.02 × 394,746,940.32
  4. Step 4: Simplify right side
    692,089,636.92x = 377,018,719,050,429,312
  5. Step 5: Solve for x
    x = 377,018,719,050,429,312/692,089,636.92
  6. Step 6: Final answer
    x = 544,754,174.80

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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.