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Finding the Fourth Proportional to 113,591.79, 156,783.39 and 70,603.75

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Solution

The fourth proportional to 113,591.79, 156,783.39 and 70,603.75 is: 97,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,591.79 : 156,783.39 = 70,603.75 : x
  2. Step 2: Convert to fraction form
    113,591.79/156,783.39 = 70,603.75/x
  3. Step 3: Cross multiply
    113,591.79x = 156,783.39 × 70,603.75
  4. Step 4: Simplify right side
    113,591.79x = 11,069,495,271.71
  5. Step 5: Solve for x
    x = 11,069,495,271.71/113,591.79
  6. Step 6: Final answer
    x = 97,449.78

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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.