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Finding the Fourth Proportional to 402,897.09, 604,245.15 and 118,531.05

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Solution

The fourth proportional to 402,897.09, 604,245.15 and 118,531.05 is: 177,767.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,897.09 : 604,245.15 = 118,531.05 : x
  2. Step 2: Convert to fraction form
    402,897.09/604,245.15 = 118,531.05/x
  3. Step 3: Cross multiply
    402,897.09x = 604,245.15 × 118,531.05
  4. Step 4: Simplify right side
    402,897.09x = 71,621,812,086.91
  5. Step 5: Solve for x
    x = 71,621,812,086.91/402,897.09
  6. Step 6: Final answer
    x = 177,767.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.