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Finding the Fourth Proportional to 283,347.75, 391,010.71 and 156,020.07

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Solution

The fourth proportional to 283,347.75, 391,010.71 and 156,020.07 is: 215,302.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,347.75 : 391,010.71 = 156,020.07 : x
  2. Step 2: Convert to fraction form
    283,347.75/391,010.71 = 156,020.07/x
  3. Step 3: Cross multiply
    283,347.75x = 391,010.71 × 156,020.07
  4. Step 4: Simplify right side
    283,347.75x = 61,005,518,344.95
  5. Step 5: Solve for x
    x = 61,005,518,344.95/283,347.75
  6. Step 6: Final answer
    x = 215,302.64

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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.