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Finding the Fourth Proportional to 98,685.36, 136,185.12 and 53,973.36

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Solution

The fourth proportional to 98,685.36, 136,185.12 and 53,973.36 is: 74,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,685.36 : 136,185.12 = 53,973.36 : x
  2. Step 2: Convert to fraction form
    98,685.36/136,185.12 = 53,973.36/x
  3. Step 3: Cross multiply
    98,685.36x = 136,185.12 × 53,973.36
  4. Step 4: Simplify right side
    98,685.36x = 7,350,368,508.40
  5. Step 5: Solve for x
    x = 7,350,368,508.40/98,685.36
  6. Step 6: Final answer
    x = 74,482.87

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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.