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Finding the Fourth Proportional to 559,368.54, 771,921.60 and 304,714.26

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Solution

The fourth proportional to 559,368.54, 771,921.60 and 304,714.26 is: 420,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,368.54 : 771,921.60 = 304,714.26 : x
  2. Step 2: Convert to fraction form
    559,368.54/771,921.60 = 304,714.26/x
  3. Step 3: Cross multiply
    559,368.54x = 771,921.60 × 304,714.26
  4. Step 4: Simplify right side
    559,368.54x = 235,215,519,122.02
  5. Step 5: Solve for x
    x = 235,215,519,122.02/559,368.54
  6. Step 6: Final answer
    x = 420,501.87

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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.