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Finding the Fourth Proportional to 153,609.04, 211,983.88 and 85,633.04

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Solution

The fourth proportional to 153,609.04, 211,983.88 and 85,633.04 is: 118,175.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,609.04 : 211,983.88 = 85,633.04 : x
  2. Step 2: Convert to fraction form
    153,609.04/211,983.88 = 85,633.04/x
  3. Step 3: Cross multiply
    153,609.04x = 211,983.88 × 85,633.04
  4. Step 4: Simplify right side
    153,609.04x = 18,152,824,075.40
  5. Step 5: Solve for x
    x = 18,152,824,075.40/153,609.04
  6. Step 6: Final answer
    x = 118,175.49

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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.