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Finding the Fourth Proportional to 584,703.47, 806,890.79 and 316,431.47

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Solution

The fourth proportional to 584,703.47, 806,890.79 and 316,431.47 is: 436,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,703.47 : 806,890.79 = 316,431.47 : x
  2. Step 2: Convert to fraction form
    584,703.47/806,890.79 = 316,431.47/x
  3. Step 3: Cross multiply
    584,703.47x = 806,890.79 × 316,431.47
  4. Step 4: Simplify right side
    584,703.47x = 255,325,639,244.23
  5. Step 5: Solve for x
    x = 255,325,639,244.23/584,703.47
  6. Step 6: Final answer
    x = 436,675.43

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Double scale
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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.