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Finding the Fourth Proportional to 1,187,460, 1,638,700.56 and 710,532

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Solution

The fourth proportional to 1,187,460, 1,638,700.56 and 710,532 is: 980,537.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,460 : 1,638,700.56 = 710,532 : x
  2. Step 2: Convert to fraction form
    1,187,460/1,638,700.56 = 710,532/x
  3. Step 3: Cross multiply
    1,187,460x = 1,638,700.56 × 710,532
  4. Step 4: Simplify right side
    1,187,460x = 1,164,349,186,297.92
  5. Step 5: Solve for x
    x = 1,164,349,186,297.92/1,187,460
  6. Step 6: Final answer
    x = 980,537.61

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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.