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Finding the Fourth Proportional to 105,700.40, 158,329.80 and 49,588.40

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Solution

The fourth proportional to 105,700.40, 158,329.80 and 49,588.40 is: 74,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,700.40 : 158,329.80 = 49,588.40 : x
  2. Step 2: Convert to fraction form
    105,700.40/158,329.80 = 49,588.40/x
  3. Step 3: Cross multiply
    105,700.40x = 158,329.80 × 49,588.40
  4. Step 4: Simplify right side
    105,700.40x = 7,851,321,454.32
  5. Step 5: Solve for x
    x = 7,851,321,454.32/105,700.40
  6. Step 6: Final answer
    x = 74,279.01

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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.