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Finding the Fourth Proportional to 593,417.51, 818,916.50 and 321,487.30

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Solution

The fourth proportional to 593,417.51, 818,916.50 and 321,487.30 is: 443,652.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,417.51 : 818,916.50 = 321,487.30 : x
  2. Step 2: Convert to fraction form
    593,417.51/818,916.50 = 321,487.30/x
  3. Step 3: Cross multiply
    593,417.51x = 818,916.50 × 321,487.30
  4. Step 4: Simplify right side
    593,417.51x = 263,271,253,266.88
  5. Step 5: Solve for x
    x = 263,271,253,266.88/593,417.51
  6. Step 6: Final answer
    x = 443,652.66

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Double scale
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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.