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Finding the Fourth Proportional to 98,756.16, 136,009.98 and 85,323.12

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Solution

The fourth proportional to 98,756.16, 136,009.98 and 85,323.12 is: 117,509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,756.16 : 136,009.98 = 85,323.12 : x
  2. Step 2: Convert to fraction form
    98,756.16/136,009.98 = 85,323.12/x
  3. Step 3: Cross multiply
    98,756.16x = 136,009.98 × 85,323.12
  4. Step 4: Simplify right side
    98,756.16x = 11,604,795,844.74
  5. Step 5: Solve for x
    x = 11,604,795,844.74/98,756.16
  6. Step 6: Final answer
    x = 117,509.59

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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.