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Finding the Fourth Proportional to 118,543.90, 163,590.60 and 64,829.02

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Solution

The fourth proportional to 118,543.90, 163,590.60 and 64,829.02 is: 89,464.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,543.90 : 163,590.60 = 64,829.02 : x
  2. Step 2: Convert to fraction form
    118,543.90/163,590.60 = 64,829.02/x
  3. Step 3: Cross multiply
    118,543.90x = 163,590.60 × 64,829.02
  4. Step 4: Simplify right side
    118,543.90x = 10,605,418,279.21
  5. Step 5: Solve for x
    x = 10,605,418,279.21/118,543.90
  6. Step 6: Final answer
    x = 89,464.06

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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.