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Finding the Fourth Proportional to 590,612.60, 885,314.10 and 290,631.80

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Solution

The fourth proportional to 590,612.60, 885,314.10 and 290,631.80 is: 435,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,612.60 : 885,314.10 = 290,631.80 : x
  2. Step 2: Convert to fraction form
    590,612.60/885,314.10 = 290,631.80/x
  3. Step 3: Cross multiply
    590,612.60x = 885,314.10 × 290,631.80
  4. Step 4: Simplify right side
    590,612.60x = 257,300,430,448.38
  5. Step 5: Solve for x
    x = 257,300,430,448.38/590,612.60
  6. Step 6: Final answer
    x = 435,650.09

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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.