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Finding the Fourth Proportional to 545,866.60, 818,915.10 and 171,927.40

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Solution

The fourth proportional to 545,866.60, 818,915.10 and 171,927.40 is: 257,927.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,866.60 : 818,915.10 = 171,927.40 : x
  2. Step 2: Convert to fraction form
    545,866.60/818,915.10 = 171,927.40/x
  3. Step 3: Cross multiply
    545,866.60x = 818,915.10 × 171,927.40
  4. Step 4: Simplify right side
    545,866.60x = 140,793,943,963.74
  5. Step 5: Solve for x
    x = 140,793,943,963.74/545,866.60
  6. Step 6: Final answer
    x = 257,927.38

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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.