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Finding the Fourth Proportional to 153,720.45, 212,101.97 and 93,322.89

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Solution

The fourth proportional to 153,720.45, 212,101.97 and 93,322.89 is: 128,766.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,720.45 : 212,101.97 = 93,322.89 : x
  2. Step 2: Convert to fraction form
    153,720.45/212,101.97 = 93,322.89/x
  3. Step 3: Cross multiply
    153,720.45x = 212,101.97 × 93,322.89
  4. Step 4: Simplify right side
    153,720.45x = 19,793,968,348.48
  5. Step 5: Solve for x
    x = 19,793,968,348.48/153,720.45
  6. Step 6: Final answer
    x = 128,766.01

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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.