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Finding the Fourth Proportional to 611,533.20, 917,299.80 and 587,038.80

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Solution

The fourth proportional to 611,533.20, 917,299.80 and 587,038.80 is: 880,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,533.20 : 917,299.80 = 587,038.80 : x
  2. Step 2: Convert to fraction form
    611,533.20/917,299.80 = 587,038.80/x
  3. Step 3: Cross multiply
    611,533.20x = 917,299.80 × 587,038.80
  4. Step 4: Simplify right side
    611,533.20x = 538,490,573,832.24
  5. Step 5: Solve for x
    x = 538,490,573,832.24/611,533.20
  6. Step 6: Final answer
    x = 880,558.20

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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.