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Finding the Fourth Proportional to 287,019.70, 430,534.83 and 124,897.39

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Solution

The fourth proportional to 287,019.70, 430,534.83 and 124,897.39 is: 187,348.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,019.70 : 430,534.83 = 124,897.39 : x
  2. Step 2: Convert to fraction form
    287,019.70/430,534.83 = 124,897.39/x
  3. Step 3: Cross multiply
    287,019.70x = 430,534.83 × 124,897.39
  4. Step 4: Simplify right side
    287,019.70x = 53,772,676,571.09
  5. Step 5: Solve for x
    x = 53,772,676,571.09/287,019.70
  6. Step 6: Final answer
    x = 187,348.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.