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Finding the Fourth Proportional to 58,361.64, 80,426.70 and 42,420.84

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Solution

The fourth proportional to 58,361.64, 80,426.70 and 42,420.84 is: 58,459.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,361.64 : 80,426.70 = 42,420.84 : x
  2. Step 2: Convert to fraction form
    58,361.64/80,426.70 = 42,420.84/x
  3. Step 3: Cross multiply
    58,361.64x = 80,426.70 × 42,420.84
  4. Step 4: Simplify right side
    58,361.64x = 3,411,768,172.43
  5. Step 5: Solve for x
    x = 3,411,768,172.43/58,361.64
  6. Step 6: Final answer
    x = 58,459.09

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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.