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Finding the Fourth Proportional to 316,077.30, 474,116.43 and 129,088.80

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Solution

The fourth proportional to 316,077.30, 474,116.43 and 129,088.80 is: 193,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,077.30 : 474,116.43 = 129,088.80 : x
  2. Step 2: Convert to fraction form
    316,077.30/474,116.43 = 129,088.80/x
  3. Step 3: Cross multiply
    316,077.30x = 474,116.43 × 129,088.80
  4. Step 4: Simplify right side
    316,077.30x = 61,203,121,008.98
  5. Step 5: Solve for x
    x = 61,203,121,008.98/316,077.30
  6. Step 6: Final answer
    x = 193,633.40

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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.