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Finding the Fourth Proportional to 386,068.24, 532,779.42 and 216,298.72

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Solution

The fourth proportional to 386,068.24, 532,779.42 and 216,298.72 is: 298,495.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,068.24 : 532,779.42 = 216,298.72 : x
  2. Step 2: Convert to fraction form
    386,068.24/532,779.42 = 216,298.72/x
  3. Step 3: Cross multiply
    386,068.24x = 532,779.42 × 216,298.72
  4. Step 4: Simplify right side
    386,068.24x = 115,239,506,588.34
  5. Step 5: Solve for x
    x = 115,239,506,588.34/386,068.24
  6. Step 6: Final answer
    x = 298,495.17

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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.