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Finding the Fourth Proportional to 106,873.65, 147,487.10 and 66,603.69

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Solution

The fourth proportional to 106,873.65, 147,487.10 and 66,603.69 is: 91,914.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,873.65 : 147,487.10 = 66,603.69 : x
  2. Step 2: Convert to fraction form
    106,873.65/147,487.10 = 66,603.69/x
  3. Step 3: Cross multiply
    106,873.65x = 147,487.10 × 66,603.69
  4. Step 4: Simplify right side
    106,873.65x = 9,823,184,754.38
  5. Step 5: Solve for x
    x = 9,823,184,754.38/106,873.65
  6. Step 6: Final answer
    x = 91,914.00

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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.