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Finding the Fourth Proportional to 316,705.52, 437,048.79 and 173,465.12

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Solution

The fourth proportional to 316,705.52, 437,048.79 and 173,465.12 is: 239,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,705.52 : 437,048.79 = 173,465.12 : x
  2. Step 2: Convert to fraction form
    316,705.52/437,048.79 = 173,465.12/x
  3. Step 3: Cross multiply
    316,705.52x = 437,048.79 × 173,465.12
  4. Step 4: Simplify right side
    316,705.52x = 75,812,720,803.20
  5. Step 5: Solve for x
    x = 75,812,720,803.20/316,705.52
  6. Step 6: Final answer
    x = 239,379.22

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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.