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Finding the Fourth Proportional to 291,108.34, 401,725.40 and 163,783.63

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Solution

The fourth proportional to 291,108.34, 401,725.40 and 163,783.63 is: 226,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,108.34 : 401,725.40 = 163,783.63 : x
  2. Step 2: Convert to fraction form
    291,108.34/401,725.40 = 163,783.63/x
  3. Step 3: Cross multiply
    291,108.34x = 401,725.40 × 163,783.63
  4. Step 4: Simplify right side
    291,108.34x = 65,796,044,275.20
  5. Step 5: Solve for x
    x = 65,796,044,275.20/291,108.34
  6. Step 6: Final answer
    x = 226,019.10

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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.