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Finding the Fourth Proportional to 98,565.19, 136,020 and 53,243.17

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Solution

The fourth proportional to 98,565.19, 136,020 and 53,243.17 is: 73,475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,565.19 : 136,020 = 53,243.17 : x
  2. Step 2: Convert to fraction form
    98,565.19/136,020 = 53,243.17/x
  3. Step 3: Cross multiply
    98,565.19x = 136,020 × 53,243.17
  4. Step 4: Simplify right side
    98,565.19x = 7,242,135,303.30
  5. Step 5: Solve for x
    x = 7,242,135,303.30/98,565.19
  6. Step 6: Final answer
    x = 73,475.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.