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Finding the Fourth Proportional to 118,335.30, 163,210.40 and 75,897.06

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Solution

The fourth proportional to 118,335.30, 163,210.40 and 75,897.06 is: 104,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,335.30 : 163,210.40 = 75,897.06 : x
  2. Step 2: Convert to fraction form
    118,335.30/163,210.40 = 75,897.06/x
  3. Step 3: Cross multiply
    118,335.30x = 163,210.40 × 75,897.06
  4. Step 4: Simplify right side
    118,335.30x = 12,387,189,521.42
  5. Step 5: Solve for x
    x = 12,387,189,521.42/118,335.30
  6. Step 6: Final answer
    x = 104,678.74

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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.