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Finding the Fourth Proportional to 536,821.66, 740,885.43 and 346,389.85

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Solution

The fourth proportional to 536,821.66, 740,885.43 and 346,389.85 is: 478,064.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,821.66 : 740,885.43 = 346,389.85 : x
  2. Step 2: Convert to fraction form
    536,821.66/740,885.43 = 346,389.85/x
  3. Step 3: Cross multiply
    536,821.66x = 740,885.43 × 346,389.85
  4. Step 4: Simplify right side
    536,821.66x = 256,635,192,964.89
  5. Step 5: Solve for x
    x = 256,635,192,964.89/536,821.66
  6. Step 6: Final answer
    x = 478,064.15

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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.