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Finding the Fourth Proportional to 219,259.98, 328,693.08 and 86,235.69

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Solution

The fourth proportional to 219,259.98, 328,693.08 and 86,235.69 is: 129,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,259.98 : 328,693.08 = 86,235.69 : x
  2. Step 2: Convert to fraction form
    219,259.98/328,693.08 = 86,235.69/x
  3. Step 3: Cross multiply
    219,259.98x = 328,693.08 × 86,235.69
  4. Step 4: Simplify right side
    219,259.98x = 28,345,074,552.03
  5. Step 5: Solve for x
    x = 28,345,074,552.03/219,259.98
  6. Step 6: Final answer
    x = 129,276.10

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1.5x scale

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.