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Finding the Fourth Proportional to 554,711.61, 765,369.88 and 382,574.55

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Solution

The fourth proportional to 554,711.61, 765,369.88 and 382,574.55 is: 527,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,711.61 : 765,369.88 = 382,574.55 : x
  2. Step 2: Convert to fraction form
    554,711.61/765,369.88 = 382,574.55/x
  3. Step 3: Cross multiply
    554,711.61x = 765,369.88 × 382,574.55
  4. Step 4: Simplify right side
    554,711.61x = 292,811,036,468.12
  5. Step 5: Solve for x
    x = 292,811,036,468.12/554,711.61
  6. Step 6: Final answer
    x = 527,861.74

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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.