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Finding the Fourth Proportional to 64,411.08, 88,889.04 and 36,116.16

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Solution

The fourth proportional to 64,411.08, 88,889.04 and 36,116.16 is: 49,841.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,411.08 : 88,889.04 = 36,116.16 : x
  2. Step 2: Convert to fraction form
    64,411.08/88,889.04 = 36,116.16/x
  3. Step 3: Cross multiply
    64,411.08x = 88,889.04 × 36,116.16
  4. Step 4: Simplify right side
    64,411.08x = 3,210,330,790.89
  5. Step 5: Solve for x
    x = 3,210,330,790.89/64,411.08
  6. Step 6: Final answer
    x = 49,841.28

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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.