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Finding the Fourth Proportional to 118,417.95, 163,413.99 and 64,703.16

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Solution

The fourth proportional to 118,417.95, 163,413.99 and 64,703.16 is: 89,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,417.95 : 163,413.99 = 64,703.16 : x
  2. Step 2: Convert to fraction form
    118,417.95/163,413.99 = 64,703.16/x
  3. Step 3: Cross multiply
    118,417.95x = 163,413.99 × 64,703.16
  4. Step 4: Simplify right side
    118,417.95x = 10,573,401,541.21
  5. Step 5: Solve for x
    x = 10,573,401,541.21/118,417.95
  6. Step 6: Final answer
    x = 89,288.84

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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.