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Finding the Fourth Proportional to 660,573.15, 911,576.01 and 384,913.95

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Solution

The fourth proportional to 660,573.15, 911,576.01 and 384,913.95 is: 531,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,573.15 : 911,576.01 = 384,913.95 : x
  2. Step 2: Convert to fraction form
    660,573.15/911,576.01 = 384,913.95/x
  3. Step 3: Cross multiply
    660,573.15x = 911,576.01 × 384,913.95
  4. Step 4: Simplify right side
    660,573.15x = 350,878,316,251.89
  5. Step 5: Solve for x
    x = 350,878,316,251.89/660,573.15
  6. Step 6: Final answer
    x = 531,172.54

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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.