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Finding the Fourth Proportional to 319,563.48, 440,999.96 and 176,328.84

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Solution

The fourth proportional to 319,563.48, 440,999.96 and 176,328.84 is: 243,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,563.48 : 440,999.96 = 176,328.84 : x
  2. Step 2: Convert to fraction form
    319,563.48/440,999.96 = 176,328.84/x
  3. Step 3: Cross multiply
    319,563.48x = 440,999.96 × 176,328.84
  4. Step 4: Simplify right side
    319,563.48x = 77,761,011,386.85
  5. Step 5: Solve for x
    x = 77,761,011,386.85/319,563.48
  6. Step 6: Final answer
    x = 243,335.10

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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.