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Finding the Fourth Proportional to 590,390.20, 885,714.90 and 291,014.20

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Solution

The fourth proportional to 590,390.20, 885,714.90 and 291,014.20 is: 436,585.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,390.20 : 885,714.90 = 291,014.20 : x
  2. Step 2: Convert to fraction form
    590,390.20/885,714.90 = 291,014.20/x
  3. Step 3: Cross multiply
    590,390.20x = 885,714.90 × 291,014.20
  4. Step 4: Simplify right side
    590,390.20x = 257,755,613,051.58
  5. Step 5: Solve for x
    x = 257,755,613,051.58/590,390.20
  6. Step 6: Final answer
    x = 436,585.18

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