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Finding the Fourth Proportional to 415,859.28, 623,272.12 and 190,981.16

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Solution

The fourth proportional to 415,859.28, 623,272.12 and 190,981.16 is: 286,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,859.28 : 623,272.12 = 190,981.16 : x
  2. Step 2: Convert to fraction form
    415,859.28/623,272.12 = 190,981.16/x
  3. Step 3: Cross multiply
    415,859.28x = 623,272.12 × 190,981.16
  4. Step 4: Simplify right side
    415,859.28x = 119,033,232,473.26
  5. Step 5: Solve for x
    x = 119,033,232,473.26/415,859.28
  6. Step 6: Final answer
    x = 286,234.40

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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.