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Finding the Fourth Proportional to 172,877.25, 238,570.65 and 93,389.25

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Solution

The fourth proportional to 172,877.25, 238,570.65 and 93,389.25 is: 128,877.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,877.25 : 238,570.65 = 93,389.25 : x
  2. Step 2: Convert to fraction form
    172,877.25/238,570.65 = 93,389.25/x
  3. Step 3: Cross multiply
    172,877.25x = 238,570.65 × 93,389.25
  4. Step 4: Simplify right side
    172,877.25x = 22,279,934,075.51
  5. Step 5: Solve for x
    x = 22,279,934,075.51/172,877.25
  6. Step 6: Final answer
    x = 128,877.19

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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.