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Finding the Fourth Proportional to 98,734.84, 136,253.67 and 53,412.71

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Solution

The fourth proportional to 98,734.84, 136,253.67 and 53,412.71 is: 73,709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,734.84 : 136,253.67 = 53,412.71 : x
  2. Step 2: Convert to fraction form
    98,734.84/136,253.67 = 53,412.71/x
  3. Step 3: Cross multiply
    98,734.84x = 136,253.67 × 53,412.71
  4. Step 4: Simplify right side
    98,734.84x = 7,277,677,762.15
  5. Step 5: Solve for x
    x = 7,277,677,762.15/98,734.84
  6. Step 6: Final answer
    x = 73,709.32

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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.