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Finding the Fourth Proportional to 570,326.15, 786,967.71 and 315,676.73

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Solution

The fourth proportional to 570,326.15, 786,967.71 and 315,676.73 is: 435,588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,326.15 : 786,967.71 = 315,676.73 : x
  2. Step 2: Convert to fraction form
    570,326.15/786,967.71 = 315,676.73/x
  3. Step 3: Cross multiply
    570,326.15x = 786,967.71 × 315,676.73
  4. Step 4: Simplify right side
    570,326.15x = 248,427,393,308.39
  5. Step 5: Solve for x
    x = 248,427,393,308.39/570,326.15
  6. Step 6: Final answer
    x = 435,588.29

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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.