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Finding the Fourth Proportional to 118,323.09, 163,292.49 and 64,613.10

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Solution

The fourth proportional to 118,323.09, 163,292.49 and 64,613.10 is: 89,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,323.09 : 163,292.49 = 64,613.10 : x
  2. Step 2: Convert to fraction form
    118,323.09/163,292.49 = 64,613.10/x
  3. Step 3: Cross multiply
    118,323.09x = 163,292.49 × 64,613.10
  4. Step 4: Simplify right side
    118,323.09x = 10,550,833,985.62
  5. Step 5: Solve for x
    x = 10,550,833,985.62/118,323.09
  6. Step 6: Final answer
    x = 89,169.70

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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.