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Finding the Fourth Proportional to 56,312.76, 77,728.90 and 32,455.32

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Solution

The fourth proportional to 56,312.76, 77,728.90 and 32,455.32 is: 44,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,312.76 : 77,728.90 = 32,455.32 : x
  2. Step 2: Convert to fraction form
    56,312.76/77,728.90 = 32,455.32/x
  3. Step 3: Cross multiply
    56,312.76x = 77,728.90 × 32,455.32
  4. Step 4: Simplify right side
    56,312.76x = 2,522,716,322.75
  5. Step 5: Solve for x
    x = 2,522,716,322.75/56,312.76
  6. Step 6: Final answer
    x = 44,798.31

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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.