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Finding the Fourth Proportional to 92,779.84, 128,034.58 and 56,468.16

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Solution

The fourth proportional to 92,779.84, 128,034.58 and 56,468.16 is: 77,925.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,779.84 : 128,034.58 = 56,468.16 : x
  2. Step 2: Convert to fraction form
    92,779.84/128,034.58 = 56,468.16/x
  3. Step 3: Cross multiply
    92,779.84x = 128,034.58 × 56,468.16
  4. Step 4: Simplify right side
    92,779.84x = 7,229,877,148.97
  5. Step 5: Solve for x
    x = 7,229,877,148.97/92,779.84
  6. Step 6: Final answer
    x = 77,925.09

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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.