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Finding the Fourth Proportional to 519,612.40, 779,442.90 and 164,654.20

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Solution

The fourth proportional to 519,612.40, 779,442.90 and 164,654.20 is: 246,989.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,612.40 : 779,442.90 = 164,654.20 : x
  2. Step 2: Convert to fraction form
    519,612.40/779,442.90 = 164,654.20/x
  3. Step 3: Cross multiply
    519,612.40x = 779,442.90 × 164,654.20
  4. Step 4: Simplify right side
    519,612.40x = 128,338,547,145.18
  5. Step 5: Solve for x
    x = 128,338,547,145.18/519,612.40
  6. Step 6: Final answer
    x = 246,989.00

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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.