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Finding the Fourth Proportional to 153,308.03, 211,572.04 and 85,329.35

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Solution

The fourth proportional to 153,308.03, 211,572.04 and 85,329.35 is: 117,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,308.03 : 211,572.04 = 85,329.35 : x
  2. Step 2: Convert to fraction form
    153,308.03/211,572.04 = 85,329.35/x
  3. Step 3: Cross multiply
    153,308.03x = 211,572.04 × 85,329.35
  4. Step 4: Simplify right side
    153,308.03x = 18,053,303,593.51
  5. Step 5: Solve for x
    x = 18,053,303,593.51/153,308.03
  6. Step 6: Final answer
    x = 117,758.37

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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.