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Finding the Fourth Proportional to 423,393.28, 635,084.42 and 103,547.93

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Solution

The fourth proportional to 423,393.28, 635,084.42 and 103,547.93 is: 155,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,393.28 : 635,084.42 = 103,547.93 : x
  2. Step 2: Convert to fraction form
    423,393.28/635,084.42 = 103,547.93/x
  3. Step 3: Cross multiply
    423,393.28x = 635,084.42 × 103,547.93
  4. Step 4: Simplify right side
    423,393.28x = 65,761,677,066.25
  5. Step 5: Solve for x
    x = 65,761,677,066.25/423,393.28
  6. Step 6: Final answer
    x = 155,320.55

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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.