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Finding the Fourth Proportional to 659,190.42, 909,348.93 and 417,065.22

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Solution

The fourth proportional to 659,190.42, 909,348.93 and 417,065.22 is: 575,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,190.42 : 909,348.93 = 417,065.22 : x
  2. Step 2: Convert to fraction form
    659,190.42/909,348.93 = 417,065.22/x
  3. Step 3: Cross multiply
    659,190.42x = 909,348.93 × 417,065.22
  4. Step 4: Simplify right side
    659,190.42x = 379,257,811,547.22
  5. Step 5: Solve for x
    x = 379,257,811,547.22/659,190.42
  6. Step 6: Final answer
    x = 575,338.78

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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.