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Finding the Fourth Proportional to 202,802.16, 279,867.60 and 113,378.16

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Solution

The fourth proportional to 202,802.16, 279,867.60 and 113,378.16 is: 156,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,802.16 : 279,867.60 = 113,378.16 : x
  2. Step 2: Convert to fraction form
    202,802.16/279,867.60 = 113,378.16/x
  3. Step 3: Cross multiply
    202,802.16x = 279,867.60 × 113,378.16
  4. Step 4: Simplify right side
    202,802.16x = 31,730,873,531.62
  5. Step 5: Solve for x
    x = 31,730,873,531.62/202,802.16
  6. Step 6: Final answer
    x = 156,462.21

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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.