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Finding the Fourth Proportional to 319,417.92, 440,715.60 and 234,387.36

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Solution

The fourth proportional to 319,417.92, 440,715.60 and 234,387.36 is: 323,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,417.92 : 440,715.60 = 234,387.36 : x
  2. Step 2: Convert to fraction form
    319,417.92/440,715.60 = 234,387.36/x
  3. Step 3: Cross multiply
    319,417.92x = 440,715.60 × 234,387.36
  4. Step 4: Simplify right side
    319,417.92x = 103,298,165,994.82
  5. Step 5: Solve for x
    x = 103,298,165,994.82/319,417.92
  6. Step 6: Final answer
    x = 323,395.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.