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Finding the Fourth Proportional to 545,436.80, 818,201.28 and 171,566.72

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Solution

The fourth proportional to 545,436.80, 818,201.28 and 171,566.72 is: 257,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,436.80 : 818,201.28 = 171,566.72 : x
  2. Step 2: Convert to fraction form
    545,436.80/818,201.28 = 171,566.72/x
  3. Step 3: Cross multiply
    545,436.80x = 818,201.28 × 171,566.72
  4. Step 4: Simplify right side
    545,436.80x = 140,376,109,909.40
  5. Step 5: Solve for x
    x = 140,376,109,909.40/545,436.80
  6. Step 6: Final answer
    x = 257,364.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.