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Finding the Fourth Proportional to 619,411.80, 929,808.90 and 578,803.80

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Solution

The fourth proportional to 619,411.80, 929,808.90 and 578,803.80 is: 868,851.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,411.80 : 929,808.90 = 578,803.80 : x
  2. Step 2: Convert to fraction form
    619,411.80/929,808.90 = 578,803.80/x
  3. Step 3: Cross multiply
    619,411.80x = 929,808.90 × 578,803.80
  4. Step 4: Simplify right side
    619,411.80x = 538,176,924,593.82
  5. Step 5: Solve for x
    x = 538,176,924,593.82/619,411.80
  6. Step 6: Final answer
    x = 868,851.59

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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.