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Finding the Fourth Proportional to 378,411.60, 566,839.80 and 191,528.40

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Solution

The fourth proportional to 378,411.60, 566,839.80 and 191,528.40 is: 286,899.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,411.60 : 566,839.80 = 191,528.40 : x
  2. Step 2: Convert to fraction form
    378,411.60/566,839.80 = 191,528.40/x
  3. Step 3: Cross multiply
    378,411.60x = 566,839.80 × 191,528.40
  4. Step 4: Simplify right side
    378,411.60x = 108,565,919,950.32
  5. Step 5: Solve for x
    x = 108,565,919,950.32/378,411.60
  6. Step 6: Final answer
    x = 286,899.03

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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.