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Finding the Fourth Proportional to 520,109.95, 717,660.45 and 290,593.87

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Solution

The fourth proportional to 520,109.95, 717,660.45 and 290,593.87 is: 400,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,109.95 : 717,660.45 = 290,593.87 : x
  2. Step 2: Convert to fraction form
    520,109.95/717,660.45 = 290,593.87/x
  3. Step 3: Cross multiply
    520,109.95x = 717,660.45 × 290,593.87
  4. Step 4: Simplify right side
    520,109.95x = 208,547,727,511.44
  5. Step 5: Solve for x
    x = 208,547,727,511.44/520,109.95
  6. Step 6: Final answer
    x = 400,968.54

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1.5x scale

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.