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Finding the Fourth Proportional to 570,445.60, 786,984.48 and 328,598.56

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Solution

The fourth proportional to 570,445.60, 786,984.48 and 328,598.56 is: 453,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,445.60 : 786,984.48 = 328,598.56 : x
  2. Step 2: Convert to fraction form
    570,445.60/786,984.48 = 328,598.56/x
  3. Step 3: Cross multiply
    570,445.60x = 786,984.48 × 328,598.56
  4. Step 4: Simplify right side
    570,445.60x = 258,601,966,870.35
  5. Step 5: Solve for x
    x = 258,601,966,870.35/570,445.60
  6. Step 6: Final answer
    x = 453,333.27

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1.5x scale

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.