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Finding the Fourth Proportional to 93,440.12, 128,962.13 and 59,413.13

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Solution

The fourth proportional to 93,440.12, 128,962.13 and 59,413.13 is: 81,999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,440.12 : 128,962.13 = 59,413.13 : x
  2. Step 2: Convert to fraction form
    93,440.12/128,962.13 = 59,413.13/x
  3. Step 3: Cross multiply
    93,440.12x = 128,962.13 × 59,413.13
  4. Step 4: Simplify right side
    93,440.12x = 7,662,043,336.50
  5. Step 5: Solve for x
    x = 7,662,043,336.50/93,440.12
  6. Step 6: Final answer
    x = 81,999.51

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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.