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Finding the Fourth Proportional to 319,112.76, 440,385.80 and 175,878.04

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Solution

The fourth proportional to 319,112.76, 440,385.80 and 175,878.04 is: 242,717.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,112.76 : 440,385.80 = 175,878.04 : x
  2. Step 2: Convert to fraction form
    319,112.76/440,385.80 = 175,878.04/x
  3. Step 3: Cross multiply
    319,112.76x = 440,385.80 × 175,878.04
  4. Step 4: Simplify right side
    319,112.76x = 77,454,191,347.83
  5. Step 5: Solve for x
    x = 77,454,191,347.83/319,112.76
  6. Step 6: Final answer
    x = 242,717.31

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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.