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Finding the Fourth Proportional to 92,858.10, 128,142.90 and 52,570.82

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Solution

The fourth proportional to 92,858.10, 128,142.90 and 52,570.82 is: 72,547.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,858.10 : 128,142.90 = 52,570.82 : x
  2. Step 2: Convert to fraction form
    92,858.10/128,142.90 = 52,570.82/x
  3. Step 3: Cross multiply
    92,858.10x = 128,142.90 × 52,570.82
  4. Step 4: Simplify right side
    92,858.10x = 6,736,577,330.18
  5. Step 5: Solve for x
    x = 6,736,577,330.18/92,858.10
  6. Step 6: Final answer
    x = 72,547.01

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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.