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Finding the Fourth Proportional to 111,888.95, 154,402.20 and 64,109.07

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Solution

The fourth proportional to 111,888.95, 154,402.20 and 64,109.07 is: 88,467.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,888.95 : 154,402.20 = 64,109.07 : x
  2. Step 2: Convert to fraction form
    111,888.95/154,402.20 = 64,109.07/x
  3. Step 3: Cross multiply
    111,888.95x = 154,402.20 × 64,109.07
  4. Step 4: Simplify right side
    111,888.95x = 9,898,581,447.95
  5. Step 5: Solve for x
    x = 9,898,581,447.95/111,888.95
  6. Step 6: Final answer
    x = 88,467.91

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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.