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Finding the Fourth Proportional to 552,425.19, 762,339.42 and 310,707.77

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Solution

The fourth proportional to 552,425.19, 762,339.42 and 310,707.77 is: 428,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,425.19 : 762,339.42 = 310,707.77 : x
  2. Step 2: Convert to fraction form
    552,425.19/762,339.42 = 310,707.77/x
  3. Step 3: Cross multiply
    552,425.19x = 762,339.42 × 310,707.77
  4. Step 4: Simplify right side
    552,425.19x = 236,864,783,077.14
  5. Step 5: Solve for x
    x = 236,864,783,077.14/552,425.19
  6. Step 6: Final answer
    x = 428,772.60

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