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Finding the Fourth Proportional to 107,891.27, 148,907.50 and 64,914.20

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Solution

The fourth proportional to 107,891.27, 148,907.50 and 64,914.20 is: 89,592.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,891.27 : 148,907.50 = 64,914.20 : x
  2. Step 2: Convert to fraction form
    107,891.27/148,907.50 = 64,914.20/x
  3. Step 3: Cross multiply
    107,891.27x = 148,907.50 × 64,914.20
  4. Step 4: Simplify right side
    107,891.27x = 9,666,210,911.93
  5. Step 5: Solve for x
    x = 9,666,210,911.93/107,891.27
  6. Step 6: Final answer
    x = 89,592.15

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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.