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Finding the Fourth Proportional to 716,978.50, 1,075,693.78 and 337,883.92

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Solution

The fourth proportional to 716,978.50, 1,075,693.78 and 337,883.92 is: 506,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,978.50 : 1,075,693.78 = 337,883.92 : x
  2. Step 2: Convert to fraction form
    716,978.50/1,075,693.78 = 337,883.92/x
  3. Step 3: Cross multiply
    716,978.50x = 1,075,693.78 × 337,883.92
  4. Step 4: Simplify right side
    716,978.50x = 363,459,631,106.02
  5. Step 5: Solve for x
    x = 363,459,631,106.02/716,978.50
  6. Step 6: Final answer
    x = 506,932.40

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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.