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Finding the Fourth Proportional to 153,200.92, 211,416.74 and 86,132.92

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Solution

The fourth proportional to 153,200.92, 211,416.74 and 86,132.92 is: 118,863.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,200.92 : 211,416.74 = 86,132.92 : x
  2. Step 2: Convert to fraction form
    153,200.92/211,416.74 = 86,132.92/x
  3. Step 3: Cross multiply
    153,200.92x = 211,416.74 × 86,132.92
  4. Step 4: Simplify right side
    153,200.92x = 18,209,941,153.08
  5. Step 5: Solve for x
    x = 18,209,941,153.08/153,200.92
  6. Step 6: Final answer
    x = 118,863.13

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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.