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Finding the Fourth Proportional to 577,069.65, 865,622.16 and 197,985.11

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Solution

The fourth proportional to 577,069.65, 865,622.16 and 197,985.11 is: 296,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,069.65 : 865,622.16 = 197,985.11 : x
  2. Step 2: Convert to fraction form
    577,069.65/865,622.16 = 197,985.11/x
  3. Step 3: Cross multiply
    577,069.65x = 865,622.16 × 197,985.11
  4. Step 4: Simplify right side
    577,069.65x = 171,380,294,237.93
  5. Step 5: Solve for x
    x = 171,380,294,237.93/577,069.65
  6. Step 6: Final answer
    x = 296,983.72

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Double scale
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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.