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Finding the Fourth Proportional to 118,031.80, 177,047.70 and 76,041.40

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Solution

The fourth proportional to 118,031.80, 177,047.70 and 76,041.40 is: 114,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,031.80 : 177,047.70 = 76,041.40 : x
  2. Step 2: Convert to fraction form
    118,031.80/177,047.70 = 76,041.40/x
  3. Step 3: Cross multiply
    118,031.80x = 177,047.70 × 76,041.40
  4. Step 4: Simplify right side
    118,031.80x = 13,462,954,974.78
  5. Step 5: Solve for x
    x = 13,462,954,974.78/118,031.80
  6. Step 6: Final answer
    x = 114,062.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.