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Finding the Fourth Proportional to 352,784.88, 529,178.76 and 86,547.12

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Solution

The fourth proportional to 352,784.88, 529,178.76 and 86,547.12 is: 129,821.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,784.88 : 529,178.76 = 86,547.12 : x
  2. Step 2: Convert to fraction form
    352,784.88/529,178.76 = 86,547.12/x
  3. Step 3: Cross multiply
    352,784.88x = 529,178.76 × 86,547.12
  4. Step 4: Simplify right side
    352,784.88x = 45,798,897,643.17
  5. Step 5: Solve for x
    x = 45,798,897,643.17/352,784.88
  6. Step 6: Final answer
    x = 129,821.03

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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.