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Finding the Fourth Proportional to 384,693.40, 577,040.10 and 346,639.60

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Solution

The fourth proportional to 384,693.40, 577,040.10 and 346,639.60 is: 519,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,693.40 : 577,040.10 = 346,639.60 : x
  2. Step 2: Convert to fraction form
    384,693.40/577,040.10 = 346,639.60/x
  3. Step 3: Cross multiply
    384,693.40x = 577,040.10 × 346,639.60
  4. Step 4: Simplify right side
    384,693.40x = 200,024,949,447.96
  5. Step 5: Solve for x
    x = 200,024,949,447.96/384,693.40
  6. Step 6: Final answer
    x = 519,959.40

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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.