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Finding the Fourth Proportional to 570,705.40, 856,069.04 and 186,455.32

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Solution

The fourth proportional to 570,705.40, 856,069.04 and 186,455.32 is: 279,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,705.40 : 856,069.04 = 186,455.32 : x
  2. Step 2: Convert to fraction form
    570,705.40/856,069.04 = 186,455.32/x
  3. Step 3: Cross multiply
    570,705.40x = 856,069.04 × 186,455.32
  4. Step 4: Simplify right side
    570,705.40x = 159,618,626,795.29
  5. Step 5: Solve for x
    x = 159,618,626,795.29/570,705.40
  6. Step 6: Final answer
    x = 279,686.55

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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.