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Finding the Fourth Proportional to 335,830.80, 503,746.20 and 292,090.80

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Solution

The fourth proportional to 335,830.80, 503,746.20 and 292,090.80 is: 438,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,830.80 : 503,746.20 = 292,090.80 : x
  2. Step 2: Convert to fraction form
    335,830.80/503,746.20 = 292,090.80/x
  3. Step 3: Cross multiply
    335,830.80x = 503,746.20 × 292,090.80
  4. Step 4: Simplify right side
    335,830.80x = 147,139,630,554.96
  5. Step 5: Solve for x
    x = 147,139,630,554.96/335,830.80
  6. Step 6: Final answer
    x = 438,136.20

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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.