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Finding the Fourth Proportional to 586,512.77, 809,387.24 and 318,240.77

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Solution

The fourth proportional to 586,512.77, 809,387.24 and 318,240.77 is: 439,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,512.77 : 809,387.24 = 318,240.77 : x
  2. Step 2: Convert to fraction form
    586,512.77/809,387.24 = 318,240.77/x
  3. Step 3: Cross multiply
    586,512.77x = 809,387.24 × 318,240.77
  4. Step 4: Simplify right side
    586,512.77x = 257,580,012,847.64
  5. Step 5: Solve for x
    x = 257,580,012,847.64/586,512.77
  6. Step 6: Final answer
    x = 439,172.05

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.