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Finding the Fourth Proportional to 577,219.80, 865,829.70 and 364,643.40

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Solution

The fourth proportional to 577,219.80, 865,829.70 and 364,643.40 is: 546,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,219.80 : 865,829.70 = 364,643.40 : x
  2. Step 2: Convert to fraction form
    577,219.80/865,829.70 = 364,643.40/x
  3. Step 3: Cross multiply
    577,219.80x = 865,829.70 × 364,643.40
  4. Step 4: Simplify right side
    577,219.80x = 315,719,085,628.98
  5. Step 5: Solve for x
    x = 315,719,085,628.98/577,219.80
  6. Step 6: Final answer
    x = 546,965.10

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Double scale
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Similar ratio
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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.