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Finding the Fourth Proportional to 193,345.20, 290,017.80 and 190,720.80

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Solution

The fourth proportional to 193,345.20, 290,017.80 and 190,720.80 is: 286,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,345.20 : 290,017.80 = 190,720.80 : x
  2. Step 2: Convert to fraction form
    193,345.20/290,017.80 = 190,720.80/x
  3. Step 3: Cross multiply
    193,345.20x = 290,017.80 × 190,720.80
  4. Step 4: Simplify right side
    193,345.20x = 55,312,426,830.24
  5. Step 5: Solve for x
    x = 55,312,426,830.24/193,345.20
  6. Step 6: Final answer
    x = 286,081.20

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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.