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Finding the Fourth Proportional to 996,978.60, 1,495,467.90 and 365,810.40

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Solution

The fourth proportional to 996,978.60, 1,495,467.90 and 365,810.40 is: 548,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,978.60 : 1,495,467.90 = 365,810.40 : x
  2. Step 2: Convert to fraction form
    996,978.60/1,495,467.90 = 365,810.40/x
  3. Step 3: Cross multiply
    996,978.60x = 1,495,467.90 × 365,810.40
  4. Step 4: Simplify right side
    996,978.60x = 547,057,710,686.16
  5. Step 5: Solve for x
    x = 547,057,710,686.16/996,978.60
  6. Step 6: Final answer
    x = 548,715.60

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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.