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Finding the Fourth Proportional to 113,465.66, 156,603.60 and 65,718.99

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Solution

The fourth proportional to 113,465.66, 156,603.60 and 65,718.99 is: 90,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,465.66 : 156,603.60 = 65,718.99 : x
  2. Step 2: Convert to fraction form
    113,465.66/156,603.60 = 65,718.99/x
  3. Step 3: Cross multiply
    113,465.66x = 156,603.60 × 65,718.99
  4. Step 4: Simplify right side
    113,465.66x = 10,291,830,422.36
  5. Step 5: Solve for x
    x = 10,291,830,422.36/113,465.66
  6. Step 6: Final answer
    x = 90,704.36

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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.