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Finding the Fourth Proportional to 98,763.71, 136,293.54 and 53,441.78

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Solution

The fourth proportional to 98,763.71, 136,293.54 and 53,441.78 is: 73,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,763.71 : 136,293.54 = 53,441.78 : x
  2. Step 2: Convert to fraction form
    98,763.71/136,293.54 = 53,441.78/x
  3. Step 3: Cross multiply
    98,763.71x = 136,293.54 × 53,441.78
  4. Step 4: Simplify right side
    98,763.71x = 7,283,768,498.23
  5. Step 5: Solve for x
    x = 7,283,768,498.23/98,763.71
  6. Step 6: Final answer
    x = 73,749.45

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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.