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Finding the Fourth Proportional to 356,864.63, 535,127.43 and 207,150.80

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Solution

The fourth proportional to 356,864.63, 535,127.43 and 207,150.80 is: 310,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,864.63 : 535,127.43 = 207,150.80 : x
  2. Step 2: Convert to fraction form
    356,864.63/535,127.43 = 207,150.80/x
  3. Step 3: Cross multiply
    356,864.63x = 535,127.43 × 207,150.80
  4. Step 4: Simplify right side
    356,864.63x = 110,852,072,550.81
  5. Step 5: Solve for x
    x = 110,852,072,550.81/356,864.63
  6. Step 6: Final answer
    x = 310,627.80

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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.