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Finding the Fourth Proportional to 315,304.86, 435,134.88 and 177,531.23

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Solution

The fourth proportional to 315,304.86, 435,134.88 and 177,531.23 is: 245,001.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,304.86 : 435,134.88 = 177,531.23 : x
  2. Step 2: Convert to fraction form
    315,304.86/435,134.88 = 177,531.23/x
  3. Step 3: Cross multiply
    315,304.86x = 435,134.88 × 177,531.23
  4. Step 4: Simplify right side
    315,304.86x = 77,250,030,462.30
  5. Step 5: Solve for x
    x = 77,250,030,462.30/315,304.86
  6. Step 6: Final answer
    x = 245,001.08

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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.