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Finding the Fourth Proportional to 254,411.55, 351,094.64 and 139,697.60

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Solution

The fourth proportional to 254,411.55, 351,094.64 and 139,697.60 is: 192,786.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,411.55 : 351,094.64 = 139,697.60 : x
  2. Step 2: Convert to fraction form
    254,411.55/351,094.64 = 139,697.60/x
  3. Step 3: Cross multiply
    254,411.55x = 351,094.64 × 139,697.60
  4. Step 4: Simplify right side
    254,411.55x = 49,047,076,126.90
  5. Step 5: Solve for x
    x = 49,047,076,126.90/254,411.55
  6. Step 6: Final answer
    x = 192,786.36

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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.