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Finding the Fourth Proportional to 118,065.90, 162,931.08 and 64,350.96

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Solution

The fourth proportional to 118,065.90, 162,931.08 and 64,350.96 is: 88,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,065.90 : 162,931.08 = 64,350.96 : x
  2. Step 2: Convert to fraction form
    118,065.90/162,931.08 = 64,350.96/x
  3. Step 3: Cross multiply
    118,065.90x = 162,931.08 × 64,350.96
  4. Step 4: Simplify right side
    118,065.90x = 10,484,771,411.84
  5. Step 5: Solve for x
    x = 10,484,771,411.84/118,065.90
  6. Step 6: Final answer
    x = 88,804.40

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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.