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Finding the Fourth Proportional to 94,647.40, 141,971.10 and 28,097.80

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Solution

The fourth proportional to 94,647.40, 141,971.10 and 28,097.80 is: 42,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,647.40 : 141,971.10 = 28,097.80 : x
  2. Step 2: Convert to fraction form
    94,647.40/141,971.10 = 28,097.80/x
  3. Step 3: Cross multiply
    94,647.40x = 141,971.10 × 28,097.80
  4. Step 4: Simplify right side
    94,647.40x = 3,989,075,573.58
  5. Step 5: Solve for x
    x = 3,989,075,573.58/94,647.40
  6. Step 6: Final answer
    x = 42,146.70

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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.