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Finding the Fourth Proportional to 1,411,956.78, 1,948,783.77 and 838,886.64

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Solution

The fourth proportional to 1,411,956.78, 1,948,783.77 and 838,886.64 is: 1,157,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,956.78 : 1,948,783.77 = 838,886.64 : x
  2. Step 2: Convert to fraction form
    1,411,956.78/1,948,783.77 = 838,886.64/x
  3. Step 3: Cross multiply
    1,411,956.78x = 1,948,783.77 × 838,886.64
  4. Step 4: Simplify right side
    1,411,956.78x = 1,634,808,668,901.83
  5. Step 5: Solve for x
    x = 1,634,808,668,901.83/1,411,956.78
  6. Step 6: Final answer
    x = 1,157,831.95

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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.