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Finding the Fourth Proportional to 611,730.40, 917,595.60 and 168,498.40

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Solution

The fourth proportional to 611,730.40, 917,595.60 and 168,498.40 is: 252,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,730.40 : 917,595.60 = 168,498.40 : x
  2. Step 2: Convert to fraction form
    611,730.40/917,595.60 = 168,498.40/x
  3. Step 3: Cross multiply
    611,730.40x = 917,595.60 × 168,498.40
  4. Step 4: Simplify right side
    611,730.40x = 154,613,390,447.04
  5. Step 5: Solve for x
    x = 154,613,390,447.04/611,730.40
  6. Step 6: Final answer
    x = 252,747.60

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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.