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Finding the Fourth Proportional to 172,915.13, 238,622.88 and 93,427.13

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Solution

The fourth proportional to 172,915.13, 238,622.88 and 93,427.13 is: 128,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,915.13 : 238,622.88 = 93,427.13 : x
  2. Step 2: Convert to fraction form
    172,915.13/238,622.88 = 93,427.13/x
  3. Step 3: Cross multiply
    172,915.13x = 238,622.88 × 93,427.13
  4. Step 4: Simplify right side
    172,915.13x = 22,293,849,637.62
  5. Step 5: Solve for x
    x = 22,293,849,637.62/172,915.13
  6. Step 6: Final answer
    x = 128,929.44

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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.