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Finding the Fourth Proportional to 611,528.40, 843,893.10 and 339,587.64

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Solution

The fourth proportional to 611,528.40, 843,893.10 and 339,587.64 is: 468,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,528.40 : 843,893.10 = 339,587.64 : x
  2. Step 2: Convert to fraction form
    611,528.40/843,893.10 = 339,587.64/x
  3. Step 3: Cross multiply
    611,528.40x = 843,893.10 × 339,587.64
  4. Step 4: Simplify right side
    611,528.40x = 286,575,666,241.28
  5. Step 5: Solve for x
    x = 286,575,666,241.28/611,528.40
  6. Step 6: Final answer
    x = 468,622.01

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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.