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Finding the Fourth Proportional to 572,492.88, 858,739.32 and 217,423.44

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Solution

The fourth proportional to 572,492.88, 858,739.32 and 217,423.44 is: 326,135.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,492.88 : 858,739.32 = 217,423.44 : x
  2. Step 2: Convert to fraction form
    572,492.88/858,739.32 = 217,423.44/x
  3. Step 3: Cross multiply
    572,492.88x = 858,739.32 × 217,423.44
  4. Step 4: Simplify right side
    572,492.88x = 186,710,057,017.66
  5. Step 5: Solve for x
    x = 186,710,057,017.66/572,492.88
  6. Step 6: Final answer
    x = 326,135.16

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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.