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Finding the Fourth Proportional to 153,556.76, 211,905.45 and 85,572.24

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Solution

The fourth proportional to 153,556.76, 211,905.45 and 85,572.24 is: 118,088.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,556.76 : 211,905.45 = 85,572.24 : x
  2. Step 2: Convert to fraction form
    153,556.76/211,905.45 = 85,572.24/x
  3. Step 3: Cross multiply
    153,556.76x = 211,905.45 × 85,572.24
  4. Step 4: Simplify right side
    153,556.76x = 18,133,223,230.06
  5. Step 5: Solve for x
    x = 18,133,223,230.06/153,556.76
  6. Step 6: Final answer
    x = 118,088.08

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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.