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Finding the Fourth Proportional to 570,890.40, 856,465.20 and 334,111.20

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Solution

The fourth proportional to 570,890.40, 856,465.20 and 334,111.20 is: 501,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,890.40 : 856,465.20 = 334,111.20 : x
  2. Step 2: Convert to fraction form
    570,890.40/856,465.20 = 334,111.20/x
  3. Step 3: Cross multiply
    570,890.40x = 856,465.20 × 334,111.20
  4. Step 4: Simplify right side
    570,890.40x = 286,154,615,730.24
  5. Step 5: Solve for x
    x = 286,154,615,730.24/570,890.40
  6. Step 6: Final answer
    x = 501,242.65

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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.