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Finding the Fourth Proportional to 153,595.12, 211,935.56 and 85,597.16

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Solution

The fourth proportional to 153,595.12, 211,935.56 and 85,597.16 is: 118,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,595.12 : 211,935.56 = 85,597.16 : x
  2. Step 2: Convert to fraction form
    153,595.12/211,935.56 = 85,597.16/x
  3. Step 3: Cross multiply
    153,595.12x = 211,935.56 × 85,597.16
  4. Step 4: Simplify right side
    153,595.12x = 18,141,082,039.01
  5. Step 5: Solve for x
    x = 18,141,082,039.01/153,595.12
  6. Step 6: Final answer
    x = 118,109.76

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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.