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Finding the Fourth Proportional to 370,705.92, 556,097.76 and 121,407.36

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Solution

The fourth proportional to 370,705.92, 556,097.76 and 121,407.36 is: 182,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,705.92 : 556,097.76 = 121,407.36 : x
  2. Step 2: Convert to fraction form
    370,705.92/556,097.76 = 121,407.36/x
  3. Step 3: Cross multiply
    370,705.92x = 556,097.76 × 121,407.36
  4. Step 4: Simplify right side
    370,705.92x = 67,514,360,943.51
  5. Step 5: Solve for x
    x = 67,514,360,943.51/370,705.92
  6. Step 6: Final answer
    x = 182,123.77

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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.