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Finding the Fourth Proportional to 711,376.40, 981,830.76 and 457,045.52

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Solution

The fourth proportional to 711,376.40, 981,830.76 and 457,045.52 is: 630,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,376.40 : 981,830.76 = 457,045.52 : x
  2. Step 2: Convert to fraction form
    711,376.40/981,830.76 = 457,045.52/x
  3. Step 3: Cross multiply
    711,376.40x = 981,830.76 × 457,045.52
  4. Step 4: Simplify right side
    711,376.40x = 448,741,350,256.20
  5. Step 5: Solve for x
    x = 448,741,350,256.20/711,376.40
  6. Step 6: Final answer
    x = 630,807.19

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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.