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Finding the Fourth Proportional to 130,143.80, 194,783.70 and 94,503.80

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Solution

The fourth proportional to 130,143.80, 194,783.70 and 94,503.80 is: 141,442.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,143.80 : 194,783.70 = 94,503.80 : x
  2. Step 2: Convert to fraction form
    130,143.80/194,783.70 = 94,503.80/x
  3. Step 3: Cross multiply
    130,143.80x = 194,783.70 × 94,503.80
  4. Step 4: Simplify right side
    130,143.80x = 18,407,799,828.06
  5. Step 5: Solve for x
    x = 18,407,799,828.06/130,143.80
  6. Step 6: Final answer
    x = 141,442.00

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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.