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Finding the Fourth Proportional to 58,413.92, 87,633.52 and 18,970.16

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Solution

The fourth proportional to 58,413.92, 87,633.52 and 18,970.16 is: 28,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,413.92 : 87,633.52 = 18,970.16 : x
  2. Step 2: Convert to fraction form
    58,413.92/87,633.52 = 18,970.16/x
  3. Step 3: Cross multiply
    58,413.92x = 87,633.52 × 18,970.16
  4. Step 4: Simplify right side
    58,413.92x = 1,662,421,895.76
  5. Step 5: Solve for x
    x = 1,662,421,895.76/58,413.92
  6. Step 6: Final answer
    x = 28,459.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.