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Finding the Fourth Proportional to 157,668.42, 217,543.05 and 101,156.34

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Solution

The fourth proportional to 157,668.42, 217,543.05 and 101,156.34 is: 139,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,668.42 : 217,543.05 = 101,156.34 : x
  2. Step 2: Convert to fraction form
    157,668.42/217,543.05 = 101,156.34/x
  3. Step 3: Cross multiply
    157,668.42x = 217,543.05 × 101,156.34
  4. Step 4: Simplify right side
    157,668.42x = 22,005,858,730.44
  5. Step 5: Solve for x
    x = 22,005,858,730.44/157,668.42
  6. Step 6: Final answer
    x = 139,570.49

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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.