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Finding the Fourth Proportional to 316,430.60, 436,670.90 and 171,233.20

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Solution

The fourth proportional to 316,430.60, 436,670.90 and 171,233.20 is: 236,300.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,430.60 : 436,670.90 = 171,233.20 : x
  2. Step 2: Convert to fraction form
    316,430.60/436,670.90 = 171,233.20/x
  3. Step 3: Cross multiply
    316,430.60x = 436,670.90 × 171,233.20
  4. Step 4: Simplify right side
    316,430.60x = 74,772,553,606.04
  5. Step 5: Solve for x
    x = 74,772,553,606.04/316,430.60
  6. Step 6: Final answer
    x = 236,300.01

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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.