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Finding the Fourth Proportional to 111,587.91, 153,980.64 and 63,192.03

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Solution

The fourth proportional to 111,587.91, 153,980.64 and 63,192.03 is: 87,198.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,587.91 : 153,980.64 = 63,192.03 : x
  2. Step 2: Convert to fraction form
    111,587.91/153,980.64 = 63,192.03/x
  3. Step 3: Cross multiply
    111,587.91x = 153,980.64 × 63,192.03
  4. Step 4: Simplify right side
    111,587.91x = 9,730,349,222.30
  5. Step 5: Solve for x
    x = 9,730,349,222.30/111,587.91
  6. Step 6: Final answer
    x = 87,198.96

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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.