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Finding the Fourth Proportional to 56,603.04, 78,116.80 and 36,501.76

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Solution

The fourth proportional to 56,603.04, 78,116.80 and 36,501.76 is: 50,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,603.04 : 78,116.80 = 36,501.76 : x
  2. Step 2: Convert to fraction form
    56,603.04/78,116.80 = 36,501.76/x
  3. Step 3: Cross multiply
    56,603.04x = 78,116.80 × 36,501.76
  4. Step 4: Simplify right side
    56,603.04x = 2,851,400,685.57
  5. Step 5: Solve for x
    x = 2,851,400,685.57/56,603.04
  6. Step 6: Final answer
    x = 50,375.40

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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.