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Finding the Fourth Proportional to 659,679.68, 909,888.60 and 605,407.16

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Solution

The fourth proportional to 659,679.68, 909,888.60 and 605,407.16 is: 835,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,679.68 : 909,888.60 = 605,407.16 : x
  2. Step 2: Convert to fraction form
    659,679.68/909,888.60 = 605,407.16/x
  3. Step 3: Cross multiply
    659,679.68x = 909,888.60 × 605,407.16
  4. Step 4: Simplify right side
    659,679.68x = 550,853,073,242.38
  5. Step 5: Solve for x
    x = 550,853,073,242.38/659,679.68
  6. Step 6: Final answer
    x = 835,031.14

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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.