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Finding the Fourth Proportional to 916,810.75, 1,373,970.21 and 347,886.01

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Solution

The fourth proportional to 916,810.75, 1,373,970.21 and 347,886.01 is: 521,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,810.75 : 1,373,970.21 = 347,886.01 : x
  2. Step 2: Convert to fraction form
    916,810.75/1,373,970.21 = 347,886.01/x
  3. Step 3: Cross multiply
    916,810.75x = 1,373,970.21 × 347,886.01
  4. Step 4: Simplify right side
    916,810.75x = 477,985,014,215.76
  5. Step 5: Solve for x
    x = 477,985,014,215.76/916,810.75
  6. Step 6: Final answer
    x = 521,356.25

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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.