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Finding the Fourth Proportional to 319,510.71, 440,846.15 and 195,300.32

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Solution

The fourth proportional to 319,510.71, 440,846.15 and 195,300.32 is: 269,466.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,510.71 : 440,846.15 = 195,300.32 : x
  2. Step 2: Convert to fraction form
    319,510.71/440,846.15 = 195,300.32/x
  3. Step 3: Cross multiply
    319,510.71x = 440,846.15 × 195,300.32
  4. Step 4: Simplify right side
    319,510.71x = 86,097,390,985.04
  5. Step 5: Solve for x
    x = 86,097,390,985.04/319,510.71
  6. Step 6: Final answer
    x = 269,466.37

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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.