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Finding the Fourth Proportional to 153,530.28, 211,868.60 and 85,546.98

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Solution

The fourth proportional to 153,530.28, 211,868.60 and 85,546.98 is: 118,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,530.28 : 211,868.60 = 85,546.98 : x
  2. Step 2: Convert to fraction form
    153,530.28/211,868.60 = 85,546.98/x
  3. Step 3: Cross multiply
    153,530.28x = 211,868.60 × 85,546.98
  4. Step 4: Simplify right side
    153,530.28x = 18,124,718,459.09
  5. Step 5: Solve for x
    x = 18,124,718,459.09/153,530.28
  6. Step 6: Final answer
    x = 118,053.05

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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.