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Finding the Fourth Proportional to 346,885.76, 478,711.68 and 195,979.52

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Solution

The fourth proportional to 346,885.76, 478,711.68 and 195,979.52 is: 270,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,885.76 : 478,711.68 = 195,979.52 : x
  2. Step 2: Convert to fraction form
    346,885.76/478,711.68 = 195,979.52/x
  3. Step 3: Cross multiply
    346,885.76x = 478,711.68 × 195,979.52
  4. Step 4: Simplify right side
    346,885.76x = 93,817,685,264.79
  5. Step 5: Solve for x
    x = 93,817,685,264.79/346,885.76
  6. Step 6: Final answer
    x = 270,457.01

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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.