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Finding the Fourth Proportional to 418,241.52, 577,325.61 and 257,312.34

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Solution

The fourth proportional to 418,241.52, 577,325.61 and 257,312.34 is: 355,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,241.52 : 577,325.61 = 257,312.34 : x
  2. Step 2: Convert to fraction form
    418,241.52/577,325.61 = 257,312.34/x
  3. Step 3: Cross multiply
    418,241.52x = 577,325.61 × 257,312.34
  4. Step 4: Simplify right side
    418,241.52x = 148,553,003,651.03
  5. Step 5: Solve for x
    x = 148,553,003,651.03/418,241.52
  6. Step 6: Final answer
    x = 355,184.74

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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.