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Finding the Fourth Proportional to 520,238.17, 780,419.77 and 183,209.16

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Solution

The fourth proportional to 520,238.17, 780,419.77 and 183,209.16 is: 274,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,238.17 : 780,419.77 = 183,209.16 : x
  2. Step 2: Convert to fraction form
    520,238.17/780,419.77 = 183,209.16/x
  3. Step 3: Cross multiply
    520,238.17x = 780,419.77 × 183,209.16
  4. Step 4: Simplify right side
    520,238.17x = 142,980,050,509.09
  5. Step 5: Solve for x
    x = 142,980,050,509.09/520,238.17
  6. Step 6: Final answer
    x = 274,835.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.