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Finding the Fourth Proportional to 310,076.90, 427,900.67 and 174,111.92

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Solution

The fourth proportional to 310,076.90, 427,900.67 and 174,111.92 is: 240,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,076.90 : 427,900.67 = 174,111.92 : x
  2. Step 2: Convert to fraction form
    310,076.90/427,900.67 = 174,111.92/x
  3. Step 3: Cross multiply
    310,076.90x = 427,900.67 × 174,111.92
  4. Step 4: Simplify right side
    310,076.90x = 74,502,607,222.99
  5. Step 5: Solve for x
    x = 74,502,607,222.99/310,076.90
  6. Step 6: Final answer
    x = 240,271.39

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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.