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Finding the Fourth Proportional to 153,906.42, 212,332.41 and 93,454.14

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Solution

The fourth proportional to 153,906.42, 212,332.41 and 93,454.14 is: 128,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,906.42 : 212,332.41 = 93,454.14 : x
  2. Step 2: Convert to fraction form
    153,906.42/212,332.41 = 93,454.14/x
  3. Step 3: Cross multiply
    153,906.42x = 212,332.41 × 93,454.14
  4. Step 4: Simplify right side
    153,906.42x = 19,843,342,770.68
  5. Step 5: Solve for x
    x = 19,843,342,770.68/153,906.42
  6. Step 6: Final answer
    x = 128,931.22

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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.