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Finding the Fourth Proportional to 570,374.40, 856,828.80 and 477,062.40

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Solution

The fourth proportional to 570,374.40, 856,828.80 and 477,062.40 is: 716,653.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,374.40 : 856,828.80 = 477,062.40 : x
  2. Step 2: Convert to fraction form
    570,374.40/856,828.80 = 477,062.40/x
  3. Step 3: Cross multiply
    570,374.40x = 856,828.80 × 477,062.40
  4. Step 4: Simplify right side
    570,374.40x = 408,760,803,717.12
  5. Step 5: Solve for x
    x = 408,760,803,717.12/570,374.40
  6. Step 6: Final answer
    x = 716,653.49

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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.