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Finding the Fourth Proportional to 385,817.83, 532,613.21 and 256,970.73

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Solution

The fourth proportional to 385,817.83, 532,613.21 and 256,970.73 is: 354,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,817.83 : 532,613.21 = 256,970.73 : x
  2. Step 2: Convert to fraction form
    385,817.83/532,613.21 = 256,970.73/x
  3. Step 3: Cross multiply
    385,817.83x = 532,613.21 × 256,970.73
  4. Step 4: Simplify right side
    385,817.83x = 136,866,005,381.34
  5. Step 5: Solve for x
    x = 136,866,005,381.34/385,817.83
  6. Step 6: Final answer
    x = 354,742.56

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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.