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Finding the Fourth Proportional to 319,254.48, 440,574.30 and 176,020.20

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Solution

The fourth proportional to 319,254.48, 440,574.30 and 176,020.20 is: 242,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,254.48 : 440,574.30 = 176,020.20 : x
  2. Step 2: Convert to fraction form
    319,254.48/440,574.30 = 176,020.20/x
  3. Step 3: Cross multiply
    319,254.48x = 440,574.30 × 176,020.20
  4. Step 4: Simplify right side
    319,254.48x = 77,549,976,400.86
  5. Step 5: Solve for x
    x = 77,549,976,400.86/319,254.48
  6. Step 6: Final answer
    x = 242,909.59

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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.