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Finding the Fourth Proportional to 1,176,888.96, 1,623,485.63 and 971,742.89

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Solution

The fourth proportional to 1,176,888.96, 1,623,485.63 and 971,742.89 is: 1,340,492.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176,888.96 : 1,623,485.63 = 971,742.89 : x
  2. Step 2: Convert to fraction form
    1,176,888.96/1,623,485.63 = 971,742.89/x
  3. Step 3: Cross multiply
    1,176,888.96x = 1,623,485.63 × 971,742.89
  4. Step 4: Simplify right side
    1,176,888.96x = 1,577,610,624,457.74
  5. Step 5: Solve for x
    x = 1,577,610,624,457.74/1,176,888.96
  6. Step 6: Final answer
    x = 1,340,492.33

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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.