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Finding the Fourth Proportional to 591,987.34, 817,017.33 and 388,209.70

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Solution

The fourth proportional to 591,987.34, 817,017.33 and 388,209.70 is: 535,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,987.34 : 817,017.33 = 388,209.70 : x
  2. Step 2: Convert to fraction form
    591,987.34/817,017.33 = 388,209.70/x
  3. Step 3: Cross multiply
    591,987.34x = 817,017.33 × 388,209.70
  4. Step 4: Simplify right side
    591,987.34x = 317,174,052,574.10
  5. Step 5: Solve for x
    x = 317,174,052,574.10/591,987.34
  6. Step 6: Final answer
    x = 535,778.44

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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.