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Finding the Fourth Proportional to 386,340.40, 579,510.60 and 364,567.60

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Solution

The fourth proportional to 386,340.40, 579,510.60 and 364,567.60 is: 546,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,340.40 : 579,510.60 = 364,567.60 : x
  2. Step 2: Convert to fraction form
    386,340.40/579,510.60 = 364,567.60/x
  3. Step 3: Cross multiply
    386,340.40x = 579,510.60 × 364,567.60
  4. Step 4: Simplify right side
    386,340.40x = 211,270,788,616.56
  5. Step 5: Solve for x
    x = 211,270,788,616.56/386,340.40
  6. Step 6: Final answer
    x = 546,851.40

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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.