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Finding the Fourth Proportional to 123,551.06, 170,373.11 and 105,705.14

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Solution

The fourth proportional to 123,551.06, 170,373.11 and 105,705.14 is: 145,764.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,551.06 : 170,373.11 = 105,705.14 : x
  2. Step 2: Convert to fraction form
    123,551.06/170,373.11 = 105,705.14/x
  3. Step 3: Cross multiply
    123,551.06x = 170,373.11 × 105,705.14
  4. Step 4: Simplify right side
    123,551.06x = 18,009,312,064.39
  5. Step 5: Solve for x
    x = 18,009,312,064.39/123,551.06
  6. Step 6: Final answer
    x = 145,764.13

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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.