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Finding the Fourth Proportional to 118,298.64, 163,254.59 and 64,585.92

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Solution

The fourth proportional to 118,298.64, 163,254.59 and 64,585.92 is: 89,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,298.64 : 163,254.59 = 64,585.92 : x
  2. Step 2: Convert to fraction form
    118,298.64/163,254.59 = 64,585.92/x
  3. Step 3: Cross multiply
    118,298.64x = 163,254.59 × 64,585.92
  4. Step 4: Simplify right side
    118,298.64x = 10,543,948,050.84
  5. Step 5: Solve for x
    x = 10,543,948,050.84/118,298.64
  6. Step 6: Final answer
    x = 89,129.92

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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.