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Finding the Fourth Proportional to 359,355.65, 538,916.86 and 119,405.12

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Solution

The fourth proportional to 359,355.65, 538,916.86 and 119,405.12 is: 179,068.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,355.65 : 538,916.86 = 119,405.12 : x
  2. Step 2: Convert to fraction form
    359,355.65/538,916.86 = 119,405.12/x
  3. Step 3: Cross multiply
    359,355.65x = 538,916.86 × 119,405.12
  4. Step 4: Simplify right side
    359,355.65x = 64,349,429,345.23
  5. Step 5: Solve for x
    x = 64,349,429,345.23/359,355.65
  6. Step 6: Final answer
    x = 179,068.93

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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.