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Finding the Fourth Proportional to 194,443.80, 291,492.90 and 127,915.80

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Solution

The fourth proportional to 194,443.80, 291,492.90 and 127,915.80 is: 191,760.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,443.80 : 291,492.90 = 127,915.80 : x
  2. Step 2: Convert to fraction form
    194,443.80/291,492.90 = 127,915.80/x
  3. Step 3: Cross multiply
    194,443.80x = 291,492.90 × 127,915.80
  4. Step 4: Simplify right side
    194,443.80x = 37,286,547,497.82
  5. Step 5: Solve for x
    x = 37,286,547,497.82/194,443.80
  6. Step 6: Final answer
    x = 191,760.02

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1.5x scale

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.