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Finding the Fourth Proportional to 118,307.79, 163,265.60 and 64,593.87

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Solution

The fourth proportional to 118,307.79, 163,265.60 and 64,593.87 is: 89,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,307.79 : 163,265.60 = 64,593.87 : x
  2. Step 2: Convert to fraction form
    118,307.79/163,265.60 = 64,593.87/x
  3. Step 3: Cross multiply
    118,307.79x = 163,265.60 × 64,593.87
  4. Step 4: Simplify right side
    118,307.79x = 10,545,956,618.90
  5. Step 5: Solve for x
    x = 10,545,956,618.90/118,307.79
  6. Step 6: Final answer
    x = 89,140.00

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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.