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Finding the Fourth Proportional to 118,407.67, 163,413.68 and 64,700.64

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Solution

The fourth proportional to 118,407.67, 163,413.68 and 64,700.64 is: 89,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,407.67 : 163,413.68 = 64,700.64 : x
  2. Step 2: Convert to fraction form
    118,407.67/163,413.68 = 64,700.64/x
  3. Step 3: Cross multiply
    118,407.67x = 163,413.68 × 64,700.64
  4. Step 4: Simplify right side
    118,407.67x = 10,572,969,357.25
  5. Step 5: Solve for x
    x = 10,572,969,357.25/118,407.67
  6. Step 6: Final answer
    x = 89,292.95

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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.