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Finding the Fourth Proportional to 172,838.40, 238,627.08 and 141,082.80

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Solution

The fourth proportional to 172,838.40, 238,627.08 and 141,082.80 is: 194,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,838.40 : 238,627.08 = 141,082.80 : x
  2. Step 2: Convert to fraction form
    172,838.40/238,627.08 = 141,082.80/x
  3. Step 3: Cross multiply
    172,838.40x = 238,627.08 × 141,082.80
  4. Step 4: Simplify right side
    172,838.40x = 33,666,176,602.22
  5. Step 5: Solve for x
    x = 33,666,176,602.22/172,838.40
  6. Step 6: Final answer
    x = 194,784.13

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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.