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Finding the Fourth Proportional to 153,352.02, 211,638.59 and 85,381.89

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Solution

The fourth proportional to 153,352.02, 211,638.59 and 85,381.89 is: 117,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,352.02 : 211,638.59 = 85,381.89 : x
  2. Step 2: Convert to fraction form
    153,352.02/211,638.59 = 85,381.89/x
  3. Step 3: Cross multiply
    153,352.02x = 211,638.59 × 85,381.89
  4. Step 4: Simplify right side
    153,352.02x = 18,070,102,811.14
  5. Step 5: Solve for x
    x = 18,070,102,811.14/153,352.02
  6. Step 6: Final answer
    x = 117,834.14

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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.