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Finding the Fourth Proportional to 118,303.80, 177,582.06 and 65,699.16

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Solution

The fourth proportional to 118,303.80, 177,582.06 and 65,699.16 is: 98,618.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,303.80 : 177,582.06 = 65,699.16 : x
  2. Step 2: Convert to fraction form
    118,303.80/177,582.06 = 65,699.16/x
  3. Step 3: Cross multiply
    118,303.80x = 177,582.06 × 65,699.16
  4. Step 4: Simplify right side
    118,303.80x = 11,666,992,173.07
  5. Step 5: Solve for x
    x = 11,666,992,173.07/118,303.80
  6. Step 6: Final answer
    x = 98,618.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.