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Finding the Fourth Proportional to 316,303.47, 474,479.55 and 91,666.98

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Solution

The fourth proportional to 316,303.47, 474,479.55 and 91,666.98 is: 137,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,303.47 : 474,479.55 = 91,666.98 : x
  2. Step 2: Convert to fraction form
    316,303.47/474,479.55 = 91,666.98/x
  3. Step 3: Cross multiply
    316,303.47x = 474,479.55 × 91,666.98
  4. Step 4: Simplify right side
    316,303.47x = 43,494,107,420.26
  5. Step 5: Solve for x
    x = 43,494,107,420.26/316,303.47
  6. Step 6: Final answer
    x = 137,507.53

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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.