Home / 527,787.60-791,681.40-128,425.20

Finding the Fourth Proportional to 527,787.60, 791,681.40 and 128,425.20

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Solution

The fourth proportional to 527,787.60, 791,681.40 and 128,425.20 is: 192,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,787.60 : 791,681.40 = 128,425.20 : x
  2. Step 2: Convert to fraction form
    527,787.60/791,681.40 = 128,425.20/x
  3. Step 3: Cross multiply
    527,787.60x = 791,681.40 × 128,425.20
  4. Step 4: Simplify right side
    527,787.60x = 101,671,842,131.28
  5. Step 5: Solve for x
    x = 101,671,842,131.28/527,787.60
  6. Step 6: Final answer
    x = 192,637.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.