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Finding the Fourth Proportional to 539,897.50, 745,058.61 and 313,557.58

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Solution

The fourth proportional to 539,897.50, 745,058.61 and 313,557.58 is: 432,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,897.50 : 745,058.61 = 313,557.58 : x
  2. Step 2: Convert to fraction form
    539,897.50/745,058.61 = 313,557.58/x
  3. Step 3: Cross multiply
    539,897.50x = 745,058.61 × 313,557.58
  4. Step 4: Simplify right side
    539,897.50x = 233,618,774,709.76
  5. Step 5: Solve for x
    x = 233,618,774,709.76/539,897.50
  6. Step 6: Final answer
    x = 432,709.50

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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.