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Finding the Fourth Proportional to 541,223.32, 811,818.18 and 257,118.32

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Solution

The fourth proportional to 541,223.32, 811,818.18 and 257,118.32 is: 385,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,223.32 : 811,818.18 = 257,118.32 : x
  2. Step 2: Convert to fraction form
    541,223.32/811,818.18 = 257,118.32/x
  3. Step 3: Cross multiply
    541,223.32x = 811,818.18 × 257,118.32
  4. Step 4: Simplify right side
    541,223.32x = 208,733,326,587.06
  5. Step 5: Solve for x
    x = 208,733,326,587.06/541,223.32
  6. Step 6: Final answer
    x = 385,669.50

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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.